42439254 has 32 divisors (see below), whose sum is σ = 99719424. Its totient is φ = 11870880.

The previous prime is 42439249. The next prime is 42439307. The reversal of 42439254 is 45293424.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23874 + ... + 25589.

It is an arithmetic number, because the mean of its divisors is an integer number (3116232).

Almost surely, 2^42439254 is an apocalyptic number.

42439254 is an abundant number, since it is smaller than the sum of its proper divisors (57280170).

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

42439254 is a wasteful number, since it uses less digits than its factorization.

42439254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49492.

The product of its digits is 34560, while the sum is 33.

The square root of 42439254 is about 6514.5417336909. The cubic root of 42439254 is about 348.8102569281.

The spelling of 42439254 in words is "forty-two million, four hundred thirty-nine thousand, two hundred fifty-four".