5642394101 has 2 divisors, whose sum is σ = 5642394102. Its totient is φ = 5642394100.

The previous prime is 5642394073. The next prime is 5642394113. The reversal of 5642394101 is 1014932465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4208635876 + 1433758225 = 64874^2 + 37865^2 .

It is a cyclic number.

It is not a de Polignac number, because 5642394101 - 2²² = 5638199797 is a prime.

It is a super-2 number, since 2×5642394101² = 63673222381999196402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5642394181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821197050 + 2821197051.

It is an arithmetic number, because the mean of its divisors is an integer number (2821197051).

Almost surely, 2^5642394101 is an apocalyptic number.

It is an amenable number.

5642394101 is a deficient number, since it is larger than the sum of its proper divisors (1).

5642394101 is an equidigital number, since it uses as much as digits as its factorization.

5642394101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 5642394101 is about 75115.8711658195. The cubic root of 5642394101 is about 1780.2779203508.

The spelling of 5642394101 in words is "five billion, six hundred forty-two million, three hundred ninety-four thousand, one hundred one".