1242276560 has 40 divisors (see below), whose sum is σ = 3300907776. Its totient is φ = 425923200.

The previous prime is 1242276533. The next prime is 1242276583. The reversal of 1242276560 is 656722421.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1242276560.

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, 1108616 + ... + 1109735.

Almost surely, 2^1242276560 is an apocalyptic number.

1242276560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242276560 is an abundant number, since it is smaller than the sum of its proper divisors (2058631216).

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

1242276560 is a wasteful number, since it uses less digits than its factorization.

1242276560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2218371 (or 2218365 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 1242276560 is about 35245.9438801119. The cubic root of 1242276560 is about 1074.9941402241.

Adding to 1242276560 its reverse (656722421), we get a palindrome (1898998981).

The spelling of 1242276560 in words is "one billion, two hundred forty-two million, two hundred seventy-six thousand, five hundred sixty".