5642540157 has 4 divisors (see below), whose sum is σ = 7523386880. Its totient is φ = 3761693436.

The previous prime is 5642540117. The next prime is 5642540201. The reversal of 5642540157 is 7510452465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5642540157 - 2⁶ = 5642540093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5642540117) 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, 940423357 + ... + 940423362.

It is an arithmetic number, because the mean of its divisors is an integer number (1880846720).

Almost surely, 2^5642540157 is an apocalyptic number.

It is an amenable number.

5642540157 is a deficient number, since it is larger than the sum of its proper divisors (1880846723).

5642540157 is a wasteful number, since it uses less digits than its factorization.

5642540157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880846722.

The product of its (nonzero) digits is 168000, while the sum is 39.

The square root of 5642540157 is about 75116.8433641883. The cubic root of 5642540157 is about 1780.2932813260.

The spelling of 5642540157 in words is "five billion, six hundred forty-two million, five hundred forty thousand, one hundred fifty-seven".