42156116 has 6 divisors (see below), whose sum is σ = 73773210. Its totient is φ = 21078056.

The previous prime is 42156109. The next prime is 42156131. The reversal of 42156116 is 61165124.

It can be written as a sum of positive squares in only one way, i.e., 41011216 + 1144900 = 6404^2 + 1070^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5269511 + ... + 5269518.

It is an arithmetic number, because the mean of its divisors is an integer number (12295535).

Almost surely, 2^42156116 is an apocalyptic number.

It is an amenable number.

42156116 is a deficient number, since it is larger than the sum of its proper divisors (31617094).

42156116 is a wasteful number, since it uses less digits than its factorization.

42156116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10539033 (or 10539031 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 42156116 is about 6492.7741374547. The cubic root of 42156116 is about 348.0328171809.

The spelling of 42156116 in words is "forty-two million, one hundred fifty-six thousand, one hundred sixteen".