Search a number
BaseRepresentation
bin1000001010011001111…
…1011000111101010101
3111101222000121212021222
42002212133120331111
54244143420400041
6144231034420125
713063041014204
oct2024637307525
9441860555258
10140232200021
115452146a491
1223217591645
13102baa11764
146b043d323b
1539ab2db74b
hex20a67d8f55

140232200021 has 4 divisors (see below), whose sum is σ = 140629458732. Its totient is φ = 139834941312.

The previous prime is 140232199949. The next prime is 140232200077. The reversal of 140232200021 is 120002232041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120002232041 = 911131725831.

It can be written as a sum of positive squares in 2 ways, for example, as 17658688996 + 122573511025 = 132886^2 + 350105^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-140232200021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140232200081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198628826 + ... + 198629531.

It is an arithmetic number, because the mean of its divisors is an integer number (35157364683).

Almost surely, 2140232200021 is an apocalyptic number.

It is an amenable number.

140232200021 is a deficient number, since it is larger than the sum of its proper divisors (397258711).

140232200021 is an equidigital number, since it uses as much as digits as its factorization.

140232200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397258710.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 140232200021 its reverse (120002232041), we get a palindrome (260234432062).

The spelling of 140232200021 in words is "one hundred forty billion, two hundred thirty-two million, two hundred thousand, twenty-one".

Divisors: 1 353 397258357 140232200021