42031206 has 24 divisors (see below), whose sum is σ = 104077584. Its totient is φ = 12008880.

The previous prime is 42031201. The next prime is 42031243. The reversal of 42031206 is 60213024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42031201) 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, 166665 + ... + 166916.

It is an arithmetic number, because the mean of its divisors is an integer number (4336566).

Almost surely, 2^42031206 is an apocalyptic number.

42031206 is an abundant number, since it is smaller than the sum of its proper divisors (62046378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42031206 is a wasteful number, since it uses less digits than its factorization.

42031206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333596 (or 333593 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 42031206 is about 6483.1478465326. The cubic root of 42031206 is about 347.6887327692.

It can be divided in two parts, 420 and 31206, that added together give a triangular number (31626 = T₂₅₁).

The spelling of 42031206 in words is "forty-two million, thirty-one thousand, two hundred six".