42519254 has 4 divisors (see below), whose sum is σ = 63778884. Its totient is φ = 21259626.

The previous prime is 42519247. The next prime is 42519277. The reversal of 42519254 is 45291524.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 42519254.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10629812 + ... + 10629815.

It is an arithmetic number, because the mean of its divisors is an integer number (15944721).

Almost surely, 2^42519254 is an apocalyptic number.

42519254 is a deficient number, since it is larger than the sum of its proper divisors (21259630).

42519254 is a wasteful number, since it uses less digits than its factorization.

42519254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21259629.

The product of its digits is 14400, while the sum is 32.

The square root of 42519254 is about 6520.6789523791. The cubic root of 42519254 is about 349.0292939618.

The spelling of 42519254 in words is "forty-two million, five hundred nineteen thousand, two hundred fifty-four".