1245545402 has 16 divisors (see below), whose sum is σ = 1913587200. Its totient is φ = 607759728.

The previous prime is 1245545383. The next prime is 1245545407. The reversal of 1245545402 is 2045455421.

It is not an unprimeable number, because it can be changed into a prime (1245545407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13823 + ... + 51789.

It is an arithmetic number, because the mean of its divisors is an integer number (119599200).

Almost surely, 2^1245545402 is an apocalyptic number.

1245545402 is a deficient number, since it is larger than the sum of its proper divisors (668041798).

1245545402 is a wasteful number, since it uses less digits than its factorization.

1245545402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38365.

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 1245545402 is about 35292.2853042984. The cubic root of 1245545402 is about 1075.9362032213.

The spelling of 1245545402 in words is "one billion, two hundred forty-five million, five hundred forty-five thousand, four hundred two".