140002642 has 12 divisors (see below), whose sum is σ = 227401290. Its totient is φ = 64616448.

The previous prime is 140002631. The next prime is 140002649. The reversal of 140002642 is 246200041.

140002642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 58660281 + 81342361 = 7659^2 + 9019^2 .

It is not an unprimeable number, because it can be changed into a prime (140002649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206767 + ... + 207442.

Almost surely, 2^140002642 is an apocalyptic number.

140002642 is a deficient number, since it is larger than the sum of its proper divisors (87398648).

140002642 is a wasteful number, since it uses less digits than its factorization.

140002642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414237 (or 414224 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 140002642 is about 11832.2712105496. The cubic root of 140002642 is about 519.2526764906.

Adding to 140002642 its reverse (246200041), we get a palindrome (386202683).

The spelling of 140002642 in words is "one hundred forty million, two thousand, six hundred forty-two".