7542228949 has 4 divisors (see below), whose sum is σ = 7611423820. Its totient is φ = 7473034080.

The previous prime is 7542228943. The next prime is 7542228983. The reversal of 7542228949 is 9498222457.

7542228949 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6499261924 + 1042967025 = 80618^2 + 32295^2 .

It is a cyclic number.

It is not a de Polignac number, because 7542228949 - 2¹³ = 7542220757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7542228896 and 7542228905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7542228943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34597272 + ... + 34597489.

It is an arithmetic number, because the mean of its divisors is an integer number (1902855955).

Almost surely, 2^7542228949 is an apocalyptic number.

It is an amenable number.

7542228949 is a deficient number, since it is larger than the sum of its proper divisors (69194871).

7542228949 is a wasteful number, since it uses less digits than its factorization.

7542228949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69194870.

The product of its digits is 2903040, while the sum is 52.

The square root of 7542228949 is about 86846.0070987722. The cubic root of 7542228949 is about 1961.1007412947.

The spelling of 7542228949 in words is "seven billion, five hundred forty-two million, two hundred twenty-eight thousand, nine hundred forty-nine".