7492927021 has 8 divisors (see below), whose sum is σ = 7934757624. Its totient is φ = 7051215360.

The previous prime is 7492927019. The next prime is 7492927037. The reversal of 7492927021 is 1207292947.

It can be written as a sum of positive squares in 4 ways, for example, as 4256910025 + 3236016996 = 65245^2 + 56886^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7492927021 - 2¹ = 7492927019 is a prime.

It is a super-2 number, since 2×7492927021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7492927081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122191 + ... + 172963.

It is an arithmetic number, because the mean of its divisors is an integer number (991844703).

Almost surely, 2^7492927021 is an apocalyptic number.

It is an amenable number.

7492927021 is a deficient number, since it is larger than the sum of its proper divisors (441830603).

7492927021 is a wasteful number, since it uses less digits than its factorization.

7492927021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59471.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 7492927021 is about 86561.6948828984. The cubic root of 7492927021 is about 1956.8182986825.

The spelling of 7492927021 in words is "seven billion, four hundred ninety-two million, nine hundred twenty-seven thousand, twenty-one".