42012797 has 12 divisors (see below), whose sum is σ = 45847380. Its totient is φ = 38462976.

The previous prime is 42012787. The next prime is 42012821. The reversal of 42012797 is 79721024.

It can be written as a sum of positive squares in 6 ways, for example, as 4239481 + 37773316 = 2059^2 + 6146^2 .

It is not a de Polignac number, because 42012797 - 2⁸ = 42012541 is a prime.

It is a super-2 number, since 2×42012797² = 3530150223526418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42012757) 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, 8729 + ... + 12657.

It is an arithmetic number, because the mean of its divisors is an integer number (3820615).

Almost surely, 2^42012797 is an apocalyptic number.

It is an amenable number.

42012797 is a deficient number, since it is larger than the sum of its proper divisors (3834583).

42012797 is a wasteful number, since it uses less digits than its factorization.

42012797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000 (or 3983 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 42012797 is about 6481.7279331981. The cubic root of 42012797 is about 347.6379646441.

The spelling of 42012797 in words is "forty-two million, twelve thousand, seven hundred ninety-seven".