42015254 has 4 divisors (see below), whose sum is σ = 63022884. Its totient is φ = 21007626.

The previous prime is 42015247. The next prime is 42015263. The reversal of 42015254 is 45251024.

It is a happy number.

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

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 as a sum of consecutive naturals, namely, 10503812 + ... + 10503815.

It is an arithmetic number, because the mean of its divisors is an integer number (15755721).

Almost surely, 2^42015254 is an apocalyptic number.

42015254 is a deficient number, since it is larger than the sum of its proper divisors (21007630).

42015254 is a wasteful number, since it uses less digits than its factorization.

42015254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21007629.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 42015254 is about 6481.9174632203. The cubic root of 42015254 is about 347.6447413875.

Adding to 42015254 its reverse (45251024), we get a palindrome (87266278).

The spelling of 42015254 in words is "forty-two million, fifteen thousand, two hundred fifty-four".