1240122642 has 32 divisors (see below), whose sum is σ = 2732526144. Its totient is φ = 372072000.

The previous prime is 1240122641. The next prime is 1240122643. The reversal of 1240122642 is 2462210421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1240122641) and next prime (1240122643).

It is not an unprimeable number, because it can be changed into a prime (1240122641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86353 + ... + 99684.

It is an arithmetic number, because the mean of its divisors is an integer number (85391442).

Almost surely, 2^1240122642 is an apocalyptic number.

1240122642 is an abundant number, since it is smaller than the sum of its proper divisors (1492403502).

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

1240122642 is a wasteful number, since it uses less digits than its factorization.

1240122642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186154.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1240122642 is about 35215.3750796438. The cubic root of 1240122642 is about 1074.3724888662.

The spelling of 1240122642 in words is "one billion, two hundred forty million, one hundred twenty-two thousand, six hundred forty-two".