1240120254 has 16 divisors (see below), whose sum is σ = 2482299792. Its totient is φ = 413030208.

The previous prime is 1240120241. The next prime is 1240120283. The reversal of 1240120254 is 4520210421.

It is a self number, because there is not a number n which added to its sum of digits gives 1240120254.

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, 77919 + ... + 92474.

It is an arithmetic number, because the mean of its divisors is an integer number (155143737).

Almost surely, 2^1240120254 is an apocalyptic number.

1240120254 is an abundant number, since it is smaller than the sum of its proper divisors (1242179538).

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

1240120254 is a wasteful number, since it uses less digits than its factorization.

1240120254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171611.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1240120254 is about 35215.3411739827. The cubic root of 1240120254 is about 1074.3717992562.

Adding to 1240120254 its reverse (4520210421), we get a palindrome (5760330675).

The spelling of 1240120254 in words is "one billion, two hundred forty million, one hundred twenty thousand, two hundred fifty-four".