40742031 has 12 divisors (see below), whose sum is σ = 59710616. Its totient is φ = 24691920.

The previous prime is 40742017. The next prime is 40742033. The reversal of 40742031 is 13024704.

It is not a de Polignac number, because 40742031 - 2¹⁹ = 40217743 is a prime.

It is a super-2 number, since 2×40742031² = 3319826180009922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40741989 and 40742007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40742033) 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, 55756 + ... + 56481.

Almost surely, 2^40742031 is an apocalyptic number.

40742031 is a deficient number, since it is larger than the sum of its proper divisors (18968585).

40742031 is a wasteful number, since it uses less digits than its factorization.

40742031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112262 (or 112251 counting only the distinct ones).

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

The square root of 40742031 is about 6382.9484566304. The cubic root of 40742031 is about 344.0970042595.

Adding to 40742031 its reverse (13024704), we get a palindrome (53766735).

It can be divided in two parts, 4074 and 2031, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 40742031 in words is "forty million, seven hundred forty-two thousand, thirty-one".