164237942 has 16 divisors (see below), whose sum is σ = 269201664. Its totient is φ = 74529000.

The previous prime is 164237891. The next prime is 164237959. The reversal of 164237942 is 249732461.

It is a junction number, because it is equal to n+sod(n) for n = 164237896 and 164237905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7967 + ... + 19797.

It is an arithmetic number, because the mean of its divisors is an integer number (16825104).

Almost surely, 2^164237942 is an apocalyptic number.

164237942 is a deficient number, since it is larger than the sum of its proper divisors (104963722).

164237942 is a wasteful number, since it uses less digits than its factorization.

164237942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12475.

The product of its digits is 72576, while the sum is 38.

The square root of 164237942 is about 12815.5351819579. The cubic root of 164237942 is about 547.6349598835.

The spelling of 164237942 in words is "one hundred sixty-four million, two hundred thirty-seven thousand, nine hundred forty-two".