402123670 has 48 divisors (see below), whose sum is σ = 787529520. Its totient is φ = 147768192.

The previous prime is 402123653. The next prime is 402123671. The reversal of 402123670 is 76321204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402123671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 467701 + ... + 468559.

It is an arithmetic number, because the mean of its divisors is an integer number (16406865).

Almost surely, 2^402123670 is an apocalyptic number.

402123670 is a deficient number, since it is larger than the sum of its proper divisors (385405850).

402123670 is a wasteful number, since it uses less digits than its factorization.

402123670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169 (or 1156 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 402123670 is about 20053.0214680980. The cubic root of 402123670 is about 738.1079434161.

Adding to 402123670 its reverse (76321204), we get a palindrome (478444874).

The spelling of 402123670 in words is "four hundred two million, one hundred twenty-three thousand, six hundred seventy".