7542489312 has 240 divisors, whose sum is σ = 22915835712. Its totient is φ = 2432332800.

The previous prime is 7542489301. The next prime is 7542489313. The reversal of 7542489312 is 2139842457.

7542489312 is a `hidden beast` number, since 7 + 542 + 4 + 8 + 93 + 12 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7542489313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12303918 + ... + 12304530.

Almost surely, 2^7542489312 is an apocalyptic number.

7542489312 is a gapful number since it is divisible by the number (72) 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 7542489312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11457917856).

7542489312 is an abundant number, since it is smaller than the sum of its proper divisors (15373346400).

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

7542489312 is a wasteful number, since it uses less digits than its factorization.

7542489312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 766 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 7542489312 is about 86847.5060781828. The cubic root of 7542489312 is about 1961.1233072232.

The spelling of 7542489312 in words is "seven billion, five hundred forty-two million, four hundred eighty-nine thousand, three hundred twelve".