140042 has 12 divisors (see below), whose sum is σ = 244530. Its totient is φ = 59976.

The previous prime is 140009. The next prime is 140053. The reversal of 140042 is 240041.

It can be written as a sum of positive squares in only one way, i.e., 137641 + 2401 = 371^2 + 49^2 .

It is a super-2 number, since 2×140042² = 39223523528, which contains 22 as substring.

140042 is a modest number, since divided by 42 gives 14 as remainder.

It is a zygodrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 617 + ... + 812.

2¹⁴⁰⁰⁴² is an apocalyptic number.

140042 is a deficient number, since it is larger than the sum of its proper divisors (104488).

140042 is a wasteful number, since it uses less digits than its factorization.

140042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 140042 is about 374.2218593295. The cubic root of 140042 is about 51.9301329935.

Adding to 140042 its reverse (240041), we get a palindrome (380083).

Subtracting 140042 from its reverse (240041), we obtain a palindrome (99999).

The spelling of 140042 in words is "one hundred forty thousand, forty-two", and thus it is an iban number.