9123430042 has 4 divisors (see below), whose sum is σ = 13685145066. Its totient is φ = 4561715020.

The previous prime is 9123430031. The next prime is 9123430087. The reversal of 9123430042 is 2400343219.

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

It can be written as a sum of positive squares in only one way, i.e., 8717770161 + 405659881 = 93369^2 + 20141^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2280857509 + ... + 2280857512.

Almost surely, 2^9123430042 is an apocalyptic number.

9123430042 is a deficient number, since it is larger than the sum of its proper divisors (4561715024).

9123430042 is a wasteful number, since it uses less digits than its factorization.

9123430042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4561715023.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 9123430042 is about 95516.6479834798. The cubic root of 9123430042 is about 2089.5497486319.

The spelling of 9123430042 in words is "nine billion, one hundred twenty-three million, four hundred thirty thousand, forty-two".