140042241 has 6 divisors (see below), whose sum is σ = 202283250. Its totient is φ = 93361488.

The previous prime is 140042237. The next prime is 140042249. The reversal of 140042241 is 142240041.

It can be written as a sum of positive squares in only one way, i.e., 118919025 + 21123216 = 10905^2 + 4596^2 .

It is not a de Polignac number, because 140042241 - 2² = 140042237 is a prime.

It is a super-2 number, since 2×140042241² = 39223658528604162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140042249) 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, 7780116 + ... + 7780133.

It is an arithmetic number, because the mean of its divisors is an integer number (33713875).

Almost surely, 2^140042241 is an apocalyptic number.

It is an amenable number.

140042241 is a deficient number, since it is larger than the sum of its proper divisors (62241009).

140042241 is a wasteful number, since it uses less digits than its factorization.

140042241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15560255 (or 15560252 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 140042241 is about 11833.9444396194. The cubic root of 140042241 is about 519.3016278250.

Adding to 140042241 its reverse (142240041), we get a palindrome (282282282).

The spelling of 140042241 in words is "one hundred forty million, forty-two thousand, two hundred forty-one".