120400634 has 16 divisors (see below), whose sum is σ = 187547400. Its totient is φ = 57900864.

The previous prime is 120400619. The next prime is 120400639. The reversal of 120400634 is 436004021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 76510009 + 43890625 = 8747^2 + 6625^2 .

It is not an unprimeable number, because it can be changed into a prime (120400639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11744 + ... + 19460.

Almost surely, 2^120400634 is an apocalyptic number.

120400634 is a deficient number, since it is larger than the sum of its proper divisors (67146766).

120400634 is a wasteful number, since it uses less digits than its factorization.

120400634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8017.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 120400634 is about 10972.7222693368. The cubic root of 120400634 is about 493.7907209058.

Adding to 120400634 its reverse (436004021), we get a palindrome (556404655).

The spelling of 120400634 in words is "one hundred twenty million, four hundred thousand, six hundred thirty-four".