7542133493 has 2 divisors, whose sum is σ = 7542133494. Its totient is φ = 7542133492.

The previous prime is 7542133457. The next prime is 7542133517. The reversal of 7542133493 is 3943312457.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5460766609 + 2081366884 = 73897^2 + 45622^2 .

It is a cyclic number.

It is not a de Polignac number, because 7542133493 - 2⁸ = 7542133237 is a prime.

It is a super-3 number, since 3×7542133493³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7542133493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7542133433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3771066746 + 3771066747.

It is an arithmetic number, because the mean of its divisors is an integer number (3771066747).

Almost surely, 2^7542133493 is an apocalyptic number.

It is an amenable number.

7542133493 is a deficient number, since it is larger than the sum of its proper divisors (1).

7542133493 is an equidigital number, since it uses as much as digits as its factorization.

7542133493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 41.

The square root of 7542133493 is about 86845.4575265742. The cubic root of 7542133493 is about 1961.0924678951.

The spelling of 7542133493 in words is "seven billion, five hundred forty-two million, one hundred thirty-three thousand, four hundred ninety-three".