42012554 has 4 divisors (see below), whose sum is σ = 63018834. Its totient is φ = 21006276.

The previous prime is 42012547. The next prime is 42012563. The reversal of 42012554 is 45521024.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 36276529 + 5736025 = 6023^2 + 2395^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10503137 + ... + 10503140.

Almost surely, 2^42012554 is an apocalyptic number.

42012554 is a deficient number, since it is larger than the sum of its proper divisors (21006280).

42012554 is a wasteful number, since it uses less digits than its factorization.

42012554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21006279.

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

The square root of 42012554 is about 6481.7091881694. The cubic root of 42012554 is about 347.6372944024.

Adding to 42012554 its reverse (45521024), we get a palindrome (87533578).

The spelling of 42012554 in words is "forty-two million, twelve thousand, five hundred fifty-four".