42156322 has 8 divisors (see below), whose sum is σ = 68098716. Its totient is φ = 19456752.

The previous prime is 42156313. The next prime is 42156347. The reversal of 42156322 is 22365124.

It can be written as a sum of positive squares in 2 ways, for example, as 37957921 + 4198401 = 6161^2 + 2049^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810673 + ... + 810724.

Almost surely, 2^42156322 is an apocalyptic number.

42156322 is a deficient number, since it is larger than the sum of its proper divisors (25942394).

42156322 is a wasteful number, since it uses less digits than its factorization.

42156322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621412.

The product of its digits is 2880, while the sum is 25.

The square root of 42156322 is about 6492.7900012244. The cubic root of 42156322 is about 348.0333840788.

The spelling of 42156322 in words is "forty-two million, one hundred fifty-six thousand, three hundred twenty-two".