42154808 has 32 divisors (see below), whose sum is σ = 80438400. Its totient is φ = 20708832.

The previous prime is 42154807. The next prime is 42154813. The reversal of 42154808 is 80845124.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42154807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185591 + ... + 185817.

It is an arithmetic number, because the mean of its divisors is an integer number (2513700).

Almost surely, 2^42154808 is an apocalyptic number.

It is an amenable number.

42154808 is a deficient number, since it is larger than the sum of its proper divisors (38283592).

42154808 is a wasteful number, since it uses less digits than its factorization.

42154808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 42154808 is about 6492.6734093130. The cubic root of 42154808 is about 348.0292176112.

The spelling of 42154808 in words is "forty-two million, one hundred fifty-four thousand, eight hundred eight".