1242471628 has 6 divisors (see below), whose sum is σ = 2174325356. Its totient is φ = 621235812.

The previous prime is 1242471623. The next prime is 1242471653. The reversal of 1242471628 is 8261742421.

It is not an unprimeable number, because it can be changed into a prime (1242471623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155308950 + ... + 155308957.

Almost surely, 2^1242471628 is an apocalyptic number.

It is an amenable number.

1242471628 is a deficient number, since it is larger than the sum of its proper divisors (931853728).

1242471628 is a wasteful number, since it uses less digits than its factorization.

1242471628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310617911 (or 310617909 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 1242471628 is about 35248.7110118938. The cubic root of 1242471628 is about 1075.0504041266.

The spelling of 1242471628 in words is "one billion, two hundred forty-two million, four hundred seventy-one thousand, six hundred twenty-eight".