1242595240 has 32 divisors (see below), whose sum is σ = 2917399680. Its totient is φ = 475427392.

The previous prime is 1242595201. The next prime is 1242595261. The reversal of 1242595240 is 425952421.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1242595196 and 1242595205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674404 + ... + 676243.

It is an arithmetic number, because the mean of its divisors is an integer number (91168740).

Almost surely, 2^1242595240 is an apocalyptic number.

1242595240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242595240 is an abundant number, since it is smaller than the sum of its proper divisors (1674804440).

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

1242595240 is a wasteful number, since it uses less digits than its factorization.

1242595240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350681 (or 1350677 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 1242595240 is about 35250.4643941041. The cubic root of 1242595240 is about 1075.0860547660.

The spelling of 1242595240 in words is "one billion, two hundred forty-two million, five hundred ninety-five thousand, two hundred forty".