74642031 has 12 divisors (see below), whose sum is σ = 107891160. Its totient is φ = 49726800.

The previous prime is 74641999. The next prime is 74642033. The reversal of 74642031 is 13024647.

It is not a de Polignac number, because 74642031 - 2⁵ = 74641999 is a prime.

It is a super-2 number, since 2×74642031² = 11142865583609922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74641986 and 74642004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74642033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24205 + ... + 27113.

It is an arithmetic number, because the mean of its divisors is an integer number (8990930).

Almost surely, 2^74642031 is an apocalyptic number.

74642031 is a deficient number, since it is larger than the sum of its proper divisors (33249129).

74642031 is a wasteful number, since it uses less digits than its factorization.

74642031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5766 (or 5763 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 74642031 is about 8639.5619680630. The cubic root of 74642031 is about 421.0443229251.

Adding to 74642031 its reverse (13024647), we get a palindrome (87666678).

The spelling of 74642031 in words is "seventy-four million, six hundred forty-two thousand, thirty-one".