5642394127 has 2 divisors, whose sum is σ = 5642394128. Its totient is φ = 5642394126.

The previous prime is 5642394119. The next prime is 5642394181. The reversal of 5642394127 is 7214932465.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5642394127 - 2³ = 5642394119 is a prime.

It is a super-2 number, since 2×5642394127² = 63673222968808184258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5642394427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821197063 + 2821197064.

It is an arithmetic number, because the mean of its divisors is an integer number (2821197064).

Almost surely, 2^5642394127 is an apocalyptic number.

5642394127 is a deficient number, since it is larger than the sum of its proper divisors (1).

5642394127 is an equidigital number, since it uses as much as digits as its factorization.

5642394127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 43.

The square root of 5642394127 is about 75115.8713388855. The cubic root of 5642394127 is about 1780.2779230853.

The spelling of 5642394127 in words is "five billion, six hundred forty-two million, three hundred ninety-four thousand, one hundred twenty-seven".