1242751330 has 8 divisors (see below), whose sum is σ = 2236952412. Its totient is φ = 497100528.

The previous prime is 1242751313. The next prime is 1242751333. The reversal of 1242751330 is 331572421.

It can be written as a sum of positive squares in 2 ways, for example, as 1061391241 + 181360089 = 32579^2 + 13467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1242751333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62137557 + ... + 62137576.

Almost surely, 2^1242751330 is an apocalyptic number.

1242751330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242751330 is a deficient number, since it is larger than the sum of its proper divisors (994201082).

1242751330 is a wasteful number, since it uses less digits than its factorization.

1242751330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124275140.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 1242751330 is about 35252.6783379646. The cubic root of 1242751330 is about 1075.1310689296.

The spelling of 1242751330 in words is "one billion, two hundred forty-two million, seven hundred fifty-one thousand, three hundred thirty".