1240222040 has 32 divisors (see below), whose sum is σ = 2793249360. Its totient is φ = 495600000.

The previous prime is 1240222021. The next prime is 1240222051. The reversal of 1240222040 is 402220421.

It is a happy number.

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, 27290 + ... + 56790.

Almost surely, 2^1240222040 is an apocalyptic number.

1240222040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240222040 is an abundant number, since it is smaller than the sum of its proper divisors (1553027320).

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

1240222040 is a wasteful number, since it uses less digits than its factorization.

1240222040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30563 (or 30559 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1240222040 is about 35216.7863383359. The cubic root of 1240222040 is about 1074.4011923778.

Adding to 1240222040 its reverse (402220421), we get a palindrome (1642442461).

The spelling of 1240222040 in words is "one billion, two hundred forty million, two hundred twenty-two thousand, forty".