12038402 has 4 divisors (see below), whose sum is σ = 18057606. Its totient is φ = 6019200.

The previous prime is 12038401. The next prime is 12038413. The reversal of 12038402 is 20483021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20483021 = 13 ⋅1575617.

It can be written as a sum of positive squares in only one way, i.e., 11095561 + 942841 = 3331^2 + 971^2 .

It is not an unprimeable number, because it can be changed into a prime (12038401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3009599 + ... + 3009602.

Almost surely, 2^12038402 is an apocalyptic number.

12038402 is a deficient number, since it is larger than the sum of its proper divisors (6019204).

12038402 is an equidigital number, since it uses as much as digits as its factorization.

12038402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6019203.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 12038402 is about 3469.6400389666. The cubic root of 12038402 is about 229.1868068837.

The spelling of 12038402 in words is "twelve million, thirty-eight thousand, four hundred two".