12145402 has 8 divisors (see below), whose sum is σ = 18474912. Its totient is φ = 5987100.

The previous prime is 12145387. The next prime is 12145417. The reversal of 12145402 is 20454121.

It is an interprime number because it is at equal distance from previous prime (12145387) and next prime (12145417).

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 12145402.

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, 42624 + ... + 42907.

It is an arithmetic number, because the mean of its divisors is an integer number (2309364).

Almost surely, 2^12145402 is an apocalyptic number.

12145402 is a deficient number, since it is larger than the sum of its proper divisors (6329510).

12145402 is an equidigital number, since it uses as much as digits as its factorization.

12145402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85604.

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

The square root of 12145402 is about 3485.0253944555. The cubic root of 12145402 is about 229.8638261351.

Adding to 12145402 its reverse (20454121), we get a palindrome (32599523).

The spelling of 12145402 in words is "twelve million, one hundred forty-five thousand, four hundred two".