164215442 has 32 divisors (see below), whose sum is σ = 264297600. Its totient is φ = 76301568.

The previous prime is 164215439. The next prime is 164215453. The reversal of 164215442 is 244512461.

164215442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×164215442² = 53933422782510728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716984 + ... + 717212.

It is an arithmetic number, because the mean of its divisors is an integer number (8259300).

Almost surely, 2^164215442 is an apocalyptic number.

164215442 is a deficient number, since it is larger than the sum of its proper divisors (100082158).

164215442 is a wasteful number, since it uses less digits than its factorization.

164215442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530.

The product of its digits is 7680, while the sum is 29.

The square root of 164215442 is about 12814.6573110638. The cubic root of 164215442 is about 547.6099507430.

The spelling of 164215442 in words is "one hundred sixty-four million, two hundred fifteen thousand, four hundred forty-two".