1240142202 has 24 divisors (see below), whose sum is σ = 2893665684. Its totient is φ = 381582144.

The previous prime is 1240142201. The next prime is 1240142203. The reversal of 1240142202 is 2022410421.

1240142202 is a `hidden beast` number, since 1 + 240 + 1 + 422 + 0 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1240142201) and next prime (1240142203).

It can be written as a sum of positive squares in 2 ways, for example, as 1215847161 + 24295041 = 34869^2 + 4929^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1240142201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2649643 + ... + 2650110.

Almost surely, 2^1240142202 is an apocalyptic number.

1240142202 is an abundant number, since it is smaller than the sum of its proper divisors (1653523482).

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

1240142202 is a wasteful number, since it uses less digits than its factorization.

1240142202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5299774 (or 5299771 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1240142202 is about 35215.6527981521. The cubic root of 1240142202 is about 1074.3781373977.

Adding to 1240142202 its reverse (2022410421), we get a palindrome (3262552623).

The spelling of 1240142202 in words is "one billion, two hundred forty million, one hundred forty-two thousand, two hundred two".