42153988 has 12 divisors (see below), whose sum is σ = 74870992. Its totient is φ = 20762280.

The previous prime is 42153983. The next prime is 42153997. The reversal of 42153988 is 88935124.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 42153988.

It is not an unprimeable number, because it can be changed into a prime (42153983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78378 + ... + 78913.

Almost surely, 2^42153988 is an apocalyptic number.

It is an amenable number.

42153988 is a deficient number, since it is larger than the sum of its proper divisors (32717004).

42153988 is a wasteful number, since it uses less digits than its factorization.

42153988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157362 (or 157360 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 42153988 is about 6492.6102609043. The cubic root of 42153988 is about 348.0269609622.

The spelling of 42153988 in words is "forty-two million, one hundred fifty-three thousand, nine hundred eighty-eight".