1242672500 has 30 divisors (see below), whose sum is σ = 2717481690. Its totient is φ = 497068000.

The previous prime is 1242672467. The next prime is 1242672547. The reversal of 1242672500 is 52762421.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 668015716 + 574656784 = 25846^2 + 23972^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 246035 + ... + 251034.

It is an arithmetic number, because the mean of its divisors is an integer number (90582723).

Almost surely, 2^1242672500 is an apocalyptic number.

1242672500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242672500 is an abundant number, since it is smaller than the sum of its proper divisors (1474809190).

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

1242672500 is an equidigital number, since it uses as much as digits as its factorization.

1242672500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497093 (or 497076 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1242672500 is about 35251.5602491578. The cubic root of 1242672500 is about 1075.1083359360.

The spelling of 1242672500 in words is "one billion, two hundred forty-two million, six hundred seventy-two thousand, five hundred".