120638 has 12 divisors (see below), whose sum is σ = 210672. Its totient is φ = 51660.

The previous prime is 120623. The next prime is 120641. The reversal of 120638 is 836021.

It is a congruent number.

It is an unprimeable number.

120638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 518 + ... + 713.

It is an arithmetic number, because the mean of its divisors is an integer number (17556).

2¹²⁰⁶³⁸ is an apocalyptic number.

120638 is a deficient number, since it is larger than the sum of its proper divisors (90034).

120638 is a wasteful number, since it uses less digits than its factorization.

120638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247 (or 1240 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 120638 is about 347.3298144415. The cubic root of 120638 is about 49.4115005433.

Adding to 120638 its reverse (836021), we get a palindrome (956659).

The spelling of 120638 in words is "one hundred twenty thousand, six hundred thirty-eight".