1240122142 has 32 divisors (see below), whose sum is σ = 2221530624. Its totient is φ = 507645600.

The previous prime is 1240122101. The next prime is 1240122151. The reversal of 1240122142 is 2412210421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262017 + ... + 266707.

It is an arithmetic number, because the mean of its divisors is an integer number (69422832).

Almost surely, 2^1240122142 is an apocalyptic number.

1240122142 is a deficient number, since it is larger than the sum of its proper divisors (981408482).

1240122142 is a wasteful number, since it uses less digits than its factorization.

1240122142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5544.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1240122142 is about 35215.3679804713. The cubic root of 1240122142 is about 1074.3723444756.

Adding to 1240122142 its reverse (2412210421), we get a palindrome (3652332563).

It can be divided in two parts, 12401 and 22142, that added together give a palindrome (34543).

The spelling of 1240122142 in words is "one billion, two hundred forty million, one hundred twenty-two thousand, one hundred forty-two".