1245242680 has 32 divisors (see below), whose sum is σ = 3056505840. Its totient is φ = 452815360.

The previous prime is 1245242671. The next prime is 1245242723. The reversal of 1245242680 is 862425421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1414609 + ... + 1415488.

Almost surely, 2^1245242680 is an apocalyptic number.

1245242680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245242680 is an abundant number, since it is smaller than the sum of its proper divisors (1811263160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1245242680 is a wasteful number, since it uses less digits than its factorization.

1245242680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830119 (or 2830115 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 1245242680 is about 35287.9962593514. The cubic root of 1245242680 is about 1075.8490296427.

The spelling of 1245242680 in words is "one billion, two hundred forty-five million, two hundred forty-two thousand, six hundred eighty".