12545402 has 8 divisors (see below), whose sum is σ = 18834816. Its totient is φ = 6267132.

The previous prime is 12545389. The next prime is 12545411. The reversal of 12545402 is 20454521.

It is a happy number.

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

It is a super-2 number, since 2×12545402² = 314774222683208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1133 + ... + 5135.

It is an arithmetic number, because the mean of its divisors is an integer number (2354352).

Almost surely, 2^12545402 is an apocalyptic number.

12545402 is a deficient number, since it is larger than the sum of its proper divisors (6289414).

12545402 is a wasteful number, since it uses less digits than its factorization.

12545402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5572.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 12545402 is about 3541.9488985585. The cubic root of 12545402 is about 232.3600853951.

Adding to 12545402 its reverse (20454521), we get a palindrome (32999923).

The spelling of 12545402 in words is "twelve million, five hundred forty-five thousand, four hundred two".