12451402 has 4 divisors (see below), whose sum is σ = 18677106. Its totient is φ = 6225700.

The previous prime is 12451399. The next prime is 12451409. The reversal of 12451402 is 20415421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6355441 + 6095961 = 2521^2 + 2469^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12451402.

It is not an unprimeable number, because it can be changed into a prime (12451409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3112849 + ... + 3112852.

Almost surely, 2^12451402 is an apocalyptic number.

12451402 is a deficient number, since it is larger than the sum of its proper divisors (6225704).

12451402 is an equidigital number, since it uses as much as digits as its factorization.

12451402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6225703.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 12451402 is about 3528.6544177632. The cubic root of 12451402 is about 231.7782884855.

Adding to 12451402 its reverse (20415421), we get a palindrome (32866823).

The spelling of 12451402 in words is "twelve million, four hundred fifty-one thousand, four hundred two".