7530042749 has 8 divisors (see below), whose sum is σ = 7929525120. Its totient is φ = 7136567856.

The previous prime is 7530042743. The next prime is 7530042761. The reversal of 7530042749 is 9472400357.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7530042749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7530042743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1499297 + ... + 1504310.

It is an arithmetic number, because the mean of its divisors is an integer number (991190640).

Almost surely, 2^7530042749 is an apocalyptic number.

It is an amenable number.

7530042749 is a deficient number, since it is larger than the sum of its proper divisors (399482371).

7530042749 is a wasteful number, since it uses less digits than its factorization.

7530042749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003739.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 7530042749 is about 86775.8189186365. The cubic root of 7530042749 is about 1960.0439693211.

The spelling of 7530042749 in words is "seven billion, five hundred thirty million, forty-two thousand, seven hundred forty-nine".