140002261 has 12 divisors (see below), whose sum is σ = 164478060. Its totient is φ = 118809600.

The previous prime is 140002253. The next prime is 140002277. The reversal of 140002261 is 162200041.

It can be written as a sum of positive squares in 2 ways, for example, as 133402500 + 6599761 = 11550^2 + 2569^2 .

It is not a de Polignac number, because 140002261 - 2³ = 140002253 is a prime.

It is a super-2 number, since 2×140002261² = 39201266170224242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140002211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9196 + ... + 19093.

It is an arithmetic number, because the mean of its divisors is an integer number (13706505).

Almost surely, 2^140002261 is an apocalyptic number.

It is an amenable number.

140002261 is a deficient number, since it is larger than the sum of its proper divisors (24475799).

140002261 is a wasteful number, since it uses less digits than its factorization.

140002261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28404 (or 28397 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 140002261 is about 11832.2551105020. The cubic root of 140002261 is about 519.2522054627.

It can be divided in two parts, 14000 and 2261, that added together give a palindrome (16261).

The spelling of 140002261 in words is "one hundred forty million, two thousand, two hundred sixty-one".