1231402 has 8 divisors (see below), whose sum is σ = 1882116. Its totient is φ = 604032.

The previous prime is 1231387. The next prime is 1231411. The reversal of 1231402 is 2041321.

It can be written as a sum of positive squares in 2 ways, for example, as 1229881 + 1521 = 1109^2 + 39^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5703 + ... + 5914.

2^1231402 is an apocalyptic number.

1231402 is a deficient number, since it is larger than the sum of its proper divisors (650714).

1231402 is a wasteful number, since it uses less digits than its factorization.

1231402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11672.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1231402 is about 1109.6855410430. The cubic root of 1231402 is about 107.1848204726.

Adding to 1231402 its reverse (2041321), we get a palindrome (3272723).

The spelling of 1231402 in words is "one million, two hundred thirty-one thousand, four hundred two".