1240155342 has 24 divisors (see below), whose sum is σ = 2688865920. Its totient is φ = 413098560.

The previous prime is 1240155313. The next prime is 1240155353. The reversal of 1240155342 is 2435510421.

1240155342 is a `hidden beast` number, since 124 + 0 + 1 + 5 + 534 + 2 = 666.

1240155342 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1240155342² = 3075970544582273928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3667 + ... + 49937.

It is an arithmetic number, because the mean of its divisors is an integer number (112036080).

Almost surely, 2^1240155342 is an apocalyptic number.

1240155342 is an abundant number, since it is smaller than the sum of its proper divisors (1448710578).

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

1240155342 is a wasteful number, since it uses less digits than its factorization.

1240155342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47768 (or 47765 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1240155342 is about 35215.8393624233. The cubic root of 1240155342 is about 1074.3819319300.

Adding to 1240155342 its reverse (2435510421), we get a palindrome (3675665763).

The spelling of 1240155342 in words is "one billion, two hundred forty million, one hundred fifty-five thousand, three hundred forty-two".