1242291572 has 12 divisors (see below), whose sum is σ = 2174328996. Its totient is φ = 621054720.

The previous prime is 1242291559. The next prime is 1242291587. The reversal of 1242291572 is 2751922421.

It can be written as a sum of positive squares in 2 ways, for example, as 599466256 + 642825316 = 24484^2 + 25354^2 .

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, 14822 + ... + 52002.

It is an arithmetic number, because the mean of its divisors is an integer number (181194083).

Almost surely, 2^1242291572 is an apocalyptic number.

It is an amenable number.

1242291572 is a deficient number, since it is larger than the sum of its proper divisors (932037424).

1242291572 is a wasteful number, since it uses less digits than its factorization.

1242291572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45538 (or 45536 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 1242291572 is about 35246.1568401436. The cubic root of 1242291572 is about 1074.9984703782.

The spelling of 1242291572 in words is "one billion, two hundred forty-two million, two hundred ninety-one thousand, five hundred seventy-two".