1240102242 has 12 divisors (see below), whose sum is σ = 2686888230. Its totient is φ = 413367408.

The previous prime is 1240102229. The next prime is 1240102243. The reversal of 1240102242 is 2422010421.

It can be written as a sum of positive squares in only one way, i.e., 1142507601 + 97594641 = 33801^2 + 9879^2 .

It is a super-2 number, since 2×1240102242² = 3075707141226853128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 68894569 = 1240102242 / (1 + 2 + 4 + 0 + 1 + 0 + 2 + 2 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (1240102243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34447267 + ... + 34447302.

Almost surely, 2^1240102242 is an apocalyptic number.

1240102242 is an abundant number, since it is smaller than the sum of its proper divisors (1446785988).

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

1240102242 is a wasteful number, since it uses less digits than its factorization.

1240102242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68894577 (or 68894574 counting only the distinct ones).

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

The square root of 1240102242 is about 35215.0854322405. The cubic root of 1240102242 is about 1074.3665976965.

Adding to 1240102242 its reverse (2422010421), we get a palindrome (3662112663).

The spelling of 1240102242 in words is "one billion, two hundred forty million, one hundred two thousand, two hundred forty-two".