1242487750 has 128 divisors (see below), whose sum is σ = 2822676480. Its totient is φ = 400464000.

The previous prime is 1242487733. The next prime is 1242487751. The reversal of 1242487750 is 577842421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242487751) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2006941 + ... + 2007559.

It is an arithmetic number, because the mean of its divisors is an integer number (22052160).

Almost surely, 2^1242487750 is an apocalyptic number.

1242487750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242487750 is an abundant number, since it is smaller than the sum of its proper divisors (1580188730).

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

1242487750 is a wasteful number, since it uses less digits than its factorization.

1242487750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 40.

The square root of 1242487750 is about 35248.9397003655. The cubic root of 1242487750 is about 1075.0550539679.

The spelling of 1242487750 in words is "one billion, two hundred forty-two million, four hundred eighty-seven thousand, seven hundred fifty".