1242440152 has 16 divisors (see below), whose sum is σ = 2330028000. Its totient is φ = 621099360.

The previous prime is 1242440149. The next prime is 1242440203. The reversal of 1242440152 is 2510442421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40849 + ... + 64447.

It is an arithmetic number, because the mean of its divisors is an integer number (145626750).

Almost surely, 2^1242440152 is an apocalyptic number.

It is an amenable number.

1242440152 is a deficient number, since it is larger than the sum of its proper divisors (1087587848).

1242440152 is a wasteful number, since it uses less digits than its factorization.

1242440152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30186 (or 30182 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 1242440152 is about 35248.2645246543. The cubic root of 1242440152 is about 1075.0413258315.

Adding to 1242440152 its reverse (2510442421), we get a palindrome (3752882573).

The spelling of 1242440152 in words is "one billion, two hundred forty-two million, four hundred forty thousand, one hundred fifty-two".