1240120242 has 24 divisors (see below), whose sum is σ = 2689855740. Its totient is φ = 412922880.

The previous prime is 1240120241. The next prime is 1240120283. The reversal of 1240120242 is 2420210421.

1240120242 is a `hidden beast` number, since 1 + 2 + 401 + 20 + 242 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1174364361 + 65755881 = 34269^2 + 8109^2 .

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 (1240120241) 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, 20359 + ... + 53802.

Almost surely, 2^1240120242 is an apocalyptic number.

1240120242 is an abundant number, since it is smaller than the sum of its proper divisors (1449735498).

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

1240120242 is a wasteful number, since it uses less digits than its factorization.

1240120242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75098 (or 75095 counting only the distinct ones).

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

The square root of 1240120242 is about 35215.3410036024. The cubic root of 1240120242 is about 1074.3717957908.

Adding to 1240120242 its reverse (2420210421), we get a palindrome (3660330663).

The spelling of 1240120242 in words is "one billion, two hundred forty million, one hundred twenty thousand, two hundred forty-two".