7854242957 has 4 divisors (see below), whose sum is σ = 8568265056. Its totient is φ = 7140220860.

The previous prime is 7854242953. The next prime is 7854243079. The reversal of 7854242957 is 7592424587.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7854242957 - 2² = 7854242953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7854242899 and 7854242908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7854242953) 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, 357011033 + ... + 357011054.

It is an arithmetic number, because the mean of its divisors is an integer number (2142066264).

Almost surely, 2^7854242957 is an apocalyptic number.

It is an amenable number.

7854242957 is a deficient number, since it is larger than the sum of its proper divisors (714022099).

7854242957 is a wasteful number, since it uses less digits than its factorization.

7854242957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714022098.

The product of its digits is 5644800, while the sum is 53.

The square root of 7854242957 is about 88624.1668903014. The cubic root of 7854242957 is about 1987.7790561166.

The spelling of 7854242957 in words is "seven billion, eight hundred fifty-four million, two hundred forty-two thousand, nine hundred fifty-seven".