694240042 has 16 divisors (see below), whose sum is σ = 1051626240. Its totient is φ = 343714288.

The previous prime is 694239979. The next prime is 694240049. The reversal of 694240042 is 240042496.

It is a junction number, because it is equal to n+sod(n) for n = 694239986 and 694240013.

It is not an unprimeable number, because it can be changed into a prime (694240049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85983 + ... + 93709.

It is an arithmetic number, because the mean of its divisors is an integer number (65726640).

Almost surely, 2^694240042 is an apocalyptic number.

694240042 is a deficient number, since it is larger than the sum of its proper divisors (357386198).

694240042 is a wasteful number, since it uses less digits than its factorization.

694240042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8165.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 694240042 is about 26348.4352856104. The cubic root of 694240042 is about 885.4619151227.

The spelling of 694240042 in words is "six hundred ninety-four million, two hundred forty thousand, forty-two".