158417442 has 24 divisors (see below), whose sum is σ = 343724160. Its totient is φ = 52731000.

The previous prime is 158417423. The next prime is 158417449. The reversal of 158417442 is 244714851.

It is a happy number.

158417442 is a `hidden beast` number, since 1 + 584 + 1 + 74 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 158417397 and 158417406.

It is not an unprimeable number, because it can be changed into a prime (158417449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7659 + ... + 19377.

It is an arithmetic number, because the mean of its divisors is an integer number (14321840).

Almost surely, 2^158417442 is an apocalyptic number.

158417442 is an abundant number, since it is smaller than the sum of its proper divisors (185306718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158417442 is a wasteful number, since it uses less digits than its factorization.

158417442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12478 (or 12475 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 158417442 is about 12586.3990879044. The cubic root of 158417442 is about 541.0877047195.

The spelling of 158417442 in words is "one hundred fifty-eight million, four hundred seventeen thousand, four hundred forty-two".