12019402 has 8 divisors (see below), whose sum is σ = 18051300. Its totient is φ = 6002304.

The previous prime is 12019387. The next prime is 12019411. The reversal of 12019402 is 20491021.

It can be written as a sum of positive squares in 2 ways, for example, as 8173881 + 3845521 = 2859^2 + 1961^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12019402.

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, 1377 + ... + 5092.

Almost surely, 2^12019402 is an apocalyptic number.

12019402 is a deficient number, since it is larger than the sum of its proper divisors (6031898).

12019402 is an equidigital number, since it uses as much as digits as its factorization.

12019402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7400.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 12019402 is about 3466.9009215725. The cubic root of 12019402 is about 229.0661695476.

It can be divided in two parts, 12019 and 402, that added together give a palindrome (12421).

The spelling of 12019402 in words is "twelve million, nineteen thousand, four hundred two".