158420032 has 28 divisors (see below), whose sum is σ = 314795916. Its totient is φ = 79101440.

The previous prime is 158420029. The next prime is 158420057. The reversal of 158420032 is 230024851.

It can be written as a sum of positive squares in 2 ways, for example, as 79281216 + 79138816 = 8904^2 + 8896^2 .

It is a junction number, because it is equal to n+sod(n) for n = 158419979 and 158420006.

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, 66738 + ... + 69070.

Almost surely, 2^158420032 is an apocalyptic number.

It is an amenable number.

158420032 is a deficient number, since it is larger than the sum of its proper divisors (156375884).

158420032 is a wasteful number, since it uses less digits than its factorization.

158420032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406 (or 3396 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 158420032 is about 12586.5019763237. The cubic root of 158420032 is about 541.0906534889.

Adding to 158420032 its reverse (230024851), we get a palindrome (388444883).

It can be divided in two parts, 1584200 and 32, that multiplied together give a square (50694400 = 7120²).

The spelling of 158420032 in words is "one hundred fifty-eight million, four hundred twenty thousand, thirty-two".