123402634 has 16 divisors (see below), whose sum is σ = 188548200. Its totient is φ = 60557760.

The previous prime is 123402619. The next prime is 123402673. The reversal of 123402634 is 436204321.

It can be written as a sum of positive squares in 4 ways, for example, as 45522009 + 77880625 = 6747^2 + 8825^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123402599 and 123402608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78892 + ... + 80440.

Almost surely, 2^123402634 is an apocalyptic number.

123402634 is a deficient number, since it is larger than the sum of its proper divisors (65145566).

123402634 is a wasteful number, since it uses less digits than its factorization.

123402634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 123402634 is about 11108.6738182377. The cubic root of 123402634 is about 497.8610414272.

Adding to 123402634 its reverse (436204321), we get a palindrome (559606955).

The spelling of 123402634 in words is "one hundred twenty-three million, four hundred two thousand, six hundred thirty-four".