12402477 has 32 divisors (see below), whose sum is σ = 19128960. Its totient is φ = 8036496.

The previous prime is 12402461. The next prime is 12402479. The reversal of 12402477 is 77420421.

It is a happy number.

It is not a de Polignac number, because 12402477 - 2⁴ = 12402461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12402477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12402479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115858 + ... + 115964.

It is an arithmetic number, because the mean of its divisors is an integer number (597780).

Almost surely, 2^12402477 is an apocalyptic number.

It is an amenable number.

12402477 is a deficient number, since it is larger than the sum of its proper divisors (6726483).

12402477 is an frugal number, since it uses more digits than its factorization.

12402477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 12402477 is about 3521.7150651352. The cubic root of 12402477 is about 231.4743163541.

Adding to 12402477 its reverse (77420421), we get a palindrome (89822898).

The spelling of 12402477 in words is "twelve million, four hundred two thousand, four hundred seventy-seven".