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140001541 is a prime number
BaseRepresentation
bin10000101100001…
…00000100000101
3100202102211000021
420112010010011
5241320022131
621520415141
73316664521
oct1026040405
9322384007
10140001541
1172033259
123aa774b1
132300ac64
1414844d81
15c456e11
hex8584105

140001541 has 2 divisors, whose sum is σ = 140001542. Its totient is φ = 140001540.

The previous prime is 140001439. The next prime is 140001577. The reversal of 140001541 is 145100041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73170916 + 66830625 = 8554^2 + 8175^2 .

It is an emirp because it is prime and its reverse (145100041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140001541 - 217 = 139870469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140001941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70000770 + 70000771.

It is an arithmetic number, because the mean of its divisors is an integer number (70000771).

Almost surely, 2140001541 is an apocalyptic number.

It is an amenable number.

140001541 is a deficient number, since it is larger than the sum of its proper divisors (1).

140001541 is an equidigital number, since it uses as much as digits as its factorization.

140001541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 140001541 is about 11832.2246851554. The cubic root of 140001541 is about 519.2513153289.

Adding to 140001541 its reverse (145100041), we get a palindrome (285101582).

The spelling of 140001541 in words is "one hundred forty million, one thousand, five hundred forty-one".