994330121242 has 4 divisors (see below), whose sum is σ = 1491495181866. Its totient is φ = 497165060620.

The previous prime is 994330121237. The next prime is 994330121243. The reversal of 994330121242 is 242121033499.

It is a happy number.

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., 991380653761 + 2949467481 = 995681^2 + 54309^2 .

It is a junction number, because it is equal to n+sod(n) for n = 994330121195 and 994330121204.

It is not an unprimeable number, because it can be changed into a prime (994330121243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248582530309 + ... + 248582530312.

Almost surely, 2^994330121242 is an apocalyptic number.

994330121242 is a deficient number, since it is larger than the sum of its proper divisors (497165060624).

994330121242 is a wasteful number, since it uses less digits than its factorization.

994330121242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497165060623.

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 994330121242 in words is "nine hundred ninety-four billion, three hundred thirty million, one hundred twenty-one thousand, two hundred forty-two".