920042031 has 4 divisors (see below), whose sum is σ = 1226722712. Its totient is φ = 613361352.

The previous prime is 920041981. The next prime is 920042083. The reversal of 920042031 is 130240029.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130240029 = 3 ⋅43413343.

It is not a de Polignac number, because 920042031 - 2¹⁰ = 920041007 is a prime.

It is a super-2 number, since 2×920042031² = 1692954677613209922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 920041989 and 920042007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920042131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153340336 + ... + 153340341.

It is an arithmetic number, because the mean of its divisors is an integer number (306680678).

Almost surely, 2^920042031 is an apocalyptic number.

920042031 is a deficient number, since it is larger than the sum of its proper divisors (306680681).

920042031 is a wasteful number, since it uses less digits than its factorization.

920042031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306680680.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 920042031 is about 30332.1946288098. The cubic root of 920042031 is about 972.6036371821.

The spelling of 920042031 in words is "nine hundred twenty million, forty-two thousand, thirty-one".