1240551442 has 16 divisors (see below), whose sum is σ = 2011060800. Its totient is φ = 570535632.

The previous prime is 1240551373. The next prime is 1240551451. The reversal of 1240551442 is 2441550421.

It is a self number, because there is not a number n which added to its sum of digits gives 1240551442.

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, 76942 + ... + 91657.

It is an arithmetic number, because the mean of its divisors is an integer number (125691300).

Almost surely, 2^1240551442 is an apocalyptic number.

1240551442 is a deficient number, since it is larger than the sum of its proper divisors (770509358).

1240551442 is a wasteful number, since it uses less digits than its factorization.

1240551442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168897.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 1240551442 is about 35221.4628032397. The cubic root of 1240551442 is about 1074.4963039954.

The spelling of 1240551442 in words is "one billion, two hundred forty million, five hundred fifty-one thousand, four hundred forty-two".