1242358272 has 120 divisors (see below), whose sum is σ = 3600305280. Its totient is φ = 412416000.

The previous prime is 1242358267. The next prime is 1242358291. The reversal of 1242358272 is 2728532421.

1242358272 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 3 + 582 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1653897 + ... + 1654647.

It is an arithmetic number, because the mean of its divisors is an integer number (30002544).

Almost surely, 2^1242358272 is an apocalyptic number.

1242358272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242358272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1800152640).

1242358272 is an abundant number, since it is smaller than the sum of its proper divisors (2357947008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242358272 is an equidigital number, since it uses as much as digits as its factorization.

1242358272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134 (or 1115 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 1242358272 is about 35247.1030298945. The cubic root of 1242358272 is about 1075.0177093171.

The spelling of 1242358272 in words is "one billion, two hundred forty-two million, three hundred fifty-eight thousand, two hundred seventy-two".