1242251260 has 12 divisors (see below), whose sum is σ = 2608727688. Its totient is φ = 496900496.

The previous prime is 1242251249. The next prime is 1242251261. The reversal of 1242251260 is 621522421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242251261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31056262 + ... + 31056301.

It is an arithmetic number, because the mean of its divisors is an integer number (217393974).

Almost surely, 2^1242251260 is an apocalyptic number.

1242251260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242251260 is an abundant number, since it is smaller than the sum of its proper divisors (1366476428).

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

1242251260 is a wasteful number, since it uses less digits than its factorization.

1242251260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62112572 (or 62112570 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1242251260 is about 35245.5849717379. The cubic root of 1242251260 is about 1074.9868424566.

Adding to 1242251260 its reverse (621522421), we get a palindrome (1863773681).

The spelling of 1242251260 in words is "one billion, two hundred forty-two million, two hundred fifty-one thousand, two hundred sixty".