158405942 has 8 divisors (see below), whose sum is σ = 237758976. Its totient is φ = 79152952.

The previous prime is 158405921. The next prime is 158405953. The reversal of 158405942 is 249504851.

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

It is a junction number, because it is equal to n+sod(n) for n = 158405896 and 158405905.

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 3 ways as a sum of consecutive naturals, for example, 20918 + ... + 27465.

It is an arithmetic number, because the mean of its divisors is an integer number (29719872).

Almost surely, 2^158405942 is an apocalyptic number.

158405942 is a deficient number, since it is larger than the sum of its proper divisors (79353034).

158405942 is a wasteful number, since it uses less digits than its factorization.

158405942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50022.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 158405942 is about 12585.9422372741. The cubic root of 158405942 is about 541.0746113397.

The spelling of 158405942 in words is "one hundred fifty-eight million, four hundred five thousand, nine hundred forty-two".