141700021 has 4 divisors (see below), whose sum is σ = 142434412. Its totient is φ = 140965632.

The previous prime is 141699991. The next prime is 141700037. The reversal of 141700021 is 120007141.

141700021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78322500 + 63377521 = 8850^2 + 7961^2 .

It is a cyclic number.

It is not a de Polignac number, because 141700021 - 2⁵ = 141699989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 141699968 and 141700004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141704021) 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, 366906 + ... + 367291.

It is an arithmetic number, because the mean of its divisors is an integer number (35608603).

Almost surely, 2^141700021 is an apocalyptic number.

It is an amenable number.

141700021 is a deficient number, since it is larger than the sum of its proper divisors (734391).

141700021 is an equidigital number, since it uses as much as digits as its factorization.

141700021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734390.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 141700021 is about 11903.7817940350. The cubic root of 141700021 is about 521.3427096932.

Adding to 141700021 its reverse (120007141), we get a palindrome (261707162).

The spelling of 141700021 in words is "one hundred forty-one million, seven hundred thousand, twenty-one".