1242451999260 has 36 divisors (see below), whose sum is σ = 3768771064968. Its totient is φ = 331320533088.

The previous prime is 1242451999249. The next prime is 1242451999333. The reversal of 1242451999260 is 629991542421.

1242451999260 is a `hidden beast` number, since 1 + 2 + 42 + 451 + 9 + 9 + 92 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 1242451999197 and 1242451999206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3451255374 + ... + 3451255733.

It is an arithmetic number, because the mean of its divisors is an integer number (104688085138).

Almost surely, 2^{1242451999260} is an apocalyptic number.

1242451999260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242451999260 is an abundant number, since it is smaller than the sum of its proper divisors (2526319065708).

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

1242451999260 is a wasteful number, since it uses less digits than its factorization.

1242451999260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6902511122 (or 6902511117 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 1242451999260 in words is "one trillion, two hundred forty-two billion, four hundred fifty-one million, nine hundred ninety-nine thousand, two hundred sixty".