42157036 has 6 divisors (see below), whose sum is σ = 73774820. Its totient is φ = 21078516.

The previous prime is 42157019. The next prime is 42157051. The reversal of 42157036 is 63075124.

It is a junction number, because it is equal to n+sod(n) for n = 42156995 and 42157013.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5269626 + ... + 5269633.

Almost surely, 2^42157036 is an apocalyptic number.

It is an amenable number.

42157036 is a deficient number, since it is larger than the sum of its proper divisors (31617784).

42157036 is a wasteful number, since it uses less digits than its factorization.

42157036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10539263 (or 10539261 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 42157036 is about 6492.8449850586. The cubic root of 42157036 is about 348.0353489437.

The spelling of 42157036 in words is "forty-two million, one hundred fifty-seven thousand, thirty-six".