74042031 has 16 divisors (see below), whose sum is σ = 118764800. Its totient is φ = 40082688.

The previous prime is 74042029. The next prime is 74042047. The reversal of 74042031 is 13024047.

It is not a de Polignac number, because 74042031 - 2¹ = 74042029 is a prime.

It is a super-2 number, since 2×74042031² = 10964444709209922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 74041989 and 74042007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74042011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92386 + ... + 93183.

It is an arithmetic number, because the mean of its divisors is an integer number (7422800).

Almost surely, 2^74042031 is an apocalyptic number.

74042031 is a deficient number, since it is larger than the sum of its proper divisors (44722769).

74042031 is a wasteful number, since it uses less digits than its factorization.

74042031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185598.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 74042031 is about 8604.7679224951. The cubic root of 74042031 is about 419.9131169489.

Adding to 74042031 its reverse (13024047), we get a palindrome (87066078).

The spelling of 74042031 in words is "seventy-four million, forty-two thousand, thirty-one".