42015556 has 36 divisors (see below), whose sum is σ = 82583424. Its totient is φ = 18681520.

The previous prime is 42015541. The next prime is 42015559. The reversal of 42015556 is 65551024.

It is not an unprimeable number, because it can be changed into a prime (42015559) 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, 21825 + ... + 23671.

It is an arithmetic number, because the mean of its divisors is an integer number (2293984).

Almost surely, 2^42015556 is an apocalyptic number.

It is an amenable number.

42015556 is a deficient number, since it is larger than the sum of its proper divisors (40567868).

42015556 is a wasteful number, since it uses less digits than its factorization.

42015556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920 (or 1907 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 42015556 is about 6481.9407587543. The cubic root of 42015556 is about 347.6455743267.

The spelling of 42015556 in words is "forty-two million, fifteen thousand, five hundred fifty-six".