7754157242 has 8 divisors (see below), whose sum is σ = 12525946356. Its totient is φ = 3578841792.

The previous prime is 7754157239. The next prime is 7754157247. The reversal of 7754157242 is 2427514577.

It can be written as a sum of positive squares in 2 ways, for example, as 6163663081 + 1590494161 = 78509^2 + 39881^2 .

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

It is a super-2 number, since 2×7754157242² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7754157193 and 7754157202.

It is not an unprimeable number, because it can be changed into a prime (7754157247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149118383 + ... + 149118434.

Almost surely, 2^7754157242 is an apocalyptic number.

7754157242 is a deficient number, since it is larger than the sum of its proper divisors (4771789114).

7754157242 is a wasteful number, since it uses less digits than its factorization.

7754157242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298236832.

The product of its digits is 548800, while the sum is 44.

The square root of 7754157242 is about 88057.6926906446. The cubic root of 7754157242 is about 1979.2995891853.

The spelling of 7754157242 in words is "seven billion, seven hundred fifty-four million, one hundred fifty-seven thousand, two hundred forty-two".