7542133749 has 16 divisors (see below), whose sum is σ = 11175105600. Its totient is φ = 5027380848.

The previous prime is 7542133699. The next prime is 7542133789. The reversal of 7542133749 is 9473312457.

7542133749 is a `hidden beast` number, since 7 + 542 + 1 + 33 + 74 + 9 = 666.

It is not a de Polignac number, because 7542133749 - 2⁸ = 7542133493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7542133789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235882 + ... + 265940.

It is an arithmetic number, because the mean of its divisors is an integer number (698444100).

Almost surely, 2^7542133749 is an apocalyptic number.

It is an amenable number.

7542133749 is a deficient number, since it is larger than the sum of its proper divisors (3632971851).

7542133749 is a wasteful number, since it uses less digits than its factorization.

7542133749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39361 (or 39355 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 7542133749 is about 86845.4590004567. The cubic root of 7542133749 is about 1961.0924900834.

The spelling of 7542133749 in words is "seven billion, five hundred forty-two million, one hundred thirty-three thousand, seven hundred forty-nine".