642250037 has 16 divisors (see below), whose sum is σ = 780554880. Its totient is φ = 520363200.

The previous prime is 642250009. The next prime is 642250039. The reversal of 642250037 is 730052246.

It is a cyclic number.

It is not a de Polignac number, because 642250037 - 2⁸ = 642249781 is a prime.

It is a super-2 number, since 2×642250037² = 824970220053002738, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 642249991 and 642250009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642250039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73289 + ... + 81582.

It is an arithmetic number, because the mean of its divisors is an integer number (48784680).

Almost surely, 2^642250037 is an apocalyptic number.

It is an amenable number.

642250037 is a deficient number, since it is larger than the sum of its proper divisors (138304843).

642250037 is a wasteful number, since it uses less digits than its factorization.

642250037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154924.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 642250037 is about 25342.6525249430. The cubic root of 642250037 is about 862.7826026817.

The spelling of 642250037 in words is "six hundred forty-two million, two hundred fifty thousand, thirty-seven".