694042442 has 16 divisors (see below), whose sum is σ = 1140314760. Its totient is φ = 315345408.

The previous prime is 694042441. The next prime is 694042451. The reversal of 694042442 is 244240496.

It can be written as a sum of positive squares in 4 ways, for example, as 575472121 + 118570321 = 23989^2 + 10889^2 .

It is a super-2 number, since 2×694042442² = 963389822594646728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (694042441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350963 + ... + 352934.

Almost surely, 2^694042442 is an apocalyptic number.

694042442 is a deficient number, since it is larger than the sum of its proper divisors (446272318).

694042442 is a wasteful number, since it uses less digits than its factorization.

694042442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703945.

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 694042442 is about 26344.6852704677. The cubic root of 694042442 is about 885.3778981321.

The spelling of 694042442 in words is "six hundred ninety-four million, forty-two thousand, four hundred forty-two".