1242487028 has 6 divisors (see below), whose sum is σ = 2174352306. Its totient is φ = 621243512.

The previous prime is 1242487027. The next prime is 1242487031. The reversal of 1242487028 is 8207842421.

It can be written as a sum of positive squares in only one way, i.e., 982697104 + 259789924 = 31348^2 + 16118^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1242486982 and 1242487000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242487027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155310875 + ... + 155310882.

It is an arithmetic number, because the mean of its divisors is an integer number (362392051).

Almost surely, 2^1242487028 is an apocalyptic number.

It is an amenable number.

1242487028 is a deficient number, since it is larger than the sum of its proper divisors (931865278).

1242487028 is a wasteful number, since it uses less digits than its factorization.

1242487028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310621761 (or 310621759 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 38.

The square root of 1242487028 is about 35248.9294589212. The cubic root of 1242487028 is about 1075.0548457325.

The spelling of 1242487028 in words is "one billion, two hundred forty-two million, four hundred eighty-seven thousand, twenty-eight".