1242225724 has 12 divisors (see below), whose sum is σ = 2193133824. Its totient is φ = 615616064.

The previous prime is 1242225697. The next prime is 1242225739. The reversal of 1242225724 is 4275222421.

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, 1373692 + ... + 1374595.

It is an arithmetic number, because the mean of its divisors is an integer number (182761152).

Almost surely, 2^1242225724 is an apocalyptic number.

It is an amenable number.

1242225724 is a deficient number, since it is larger than the sum of its proper divisors (950908100).

1242225724 is a wasteful number, since it uses less digits than its factorization.

1242225724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748404 (or 2748402 counting only the distinct ones).

The product of its digits is 17920, while the sum is 31.

The square root of 1242225724 is about 35245.2227117378. Note that the first 3 decimals coincide. The cubic root of 1242225724 is about 1074.9794765146.

The spelling of 1242225724 in words is "one billion, two hundred forty-two million, two hundred twenty-five thousand, seven hundred twenty-four".