420761031 has 16 divisors (see below), whose sum is σ = 569856000. Its totient is φ = 276108768.

The previous prime is 420761027. The next prime is 420761041. The reversal of 420761031 is 130167024.

It is not a de Polignac number, because 420761031 - 2² = 420761027 is a prime.

It is a super-2 number, since 2×420761031² = 354079690416365922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420760992 and 420761010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420761021) 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, 80170 + ... + 85256.

It is an arithmetic number, because the mean of its divisors is an integer number (35616000).

Almost surely, 2^420761031 is an apocalyptic number.

420761031 is a deficient number, since it is larger than the sum of its proper divisors (149094969).

420761031 is a wasteful number, since it uses less digits than its factorization.

420761031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5518.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 420761031 is about 20512.4603838740. The cubic root of 420761031 is about 749.3392883399.

The spelling of 420761031 in words is "four hundred twenty million, seven hundred sixty-one thousand, thirty-one".