1242225652 has 6 divisors (see below), whose sum is σ = 2173894898. Its totient is φ = 621112824.

The previous prime is 1242225631. The next prime is 1242225671. The reversal of 1242225652 is 2565222421.

It can be written as a sum of positive squares in only one way, i.e., 831514896 + 410710756 = 28836^2 + 20266^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155278203 + ... + 155278210.

Almost surely, 2^1242225652 is an apocalyptic number.

It is an amenable number.

1242225652 is a deficient number, since it is larger than the sum of its proper divisors (931669246).

1242225652 is a wasteful number, since it uses less digits than its factorization.

1242225652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310556417 (or 310556415 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 1242225652 is about 35245.2216903228. The cubic root of 1242225652 is about 1074.9794557458.

The spelling of 1242225652 in words is "one billion, two hundred forty-two million, two hundred twenty-five thousand, six hundred fifty-two".