1247427052 has 6 divisors (see below), whose sum is σ = 2182997348. Its totient is φ = 623713524.

The previous prime is 1247427043. The next prime is 1247427089. The reversal of 1247427052 is 2507247421.

It is a super-2 number, since 2×1247427052² = 3112148500122821408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1247426999 and 1247427017.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155928378 + ... + 155928385.

Almost surely, 2^1247427052 is an apocalyptic number.

It is an amenable number.

1247427052 is a deficient number, since it is larger than the sum of its proper divisors (935570296).

1247427052 is a wasteful number, since it uses less digits than its factorization.

1247427052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311856767 (or 311856765 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 34.

The square root of 1247427052 is about 35318.9333361018. The cubic root of 1247427052 is about 1076.4777375342.

The spelling of 1247427052 in words is "one billion, two hundred forty-seven million, four hundred twenty-seven thousand, fifty-two".