140027961 has 16 divisors (see below), whose sum is σ = 196369920. Its totient is φ = 88632960.

The previous prime is 140027947. The next prime is 140027971. The reversal of 140027961 is 169720041.

It is a happy number.

140027961 is nontrivially palindromic in base 9.

It is not a de Polignac number, because 140027961 - 2⁹ = 140027449 is a prime.

It is a super-3 number, since 3×140027961³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (140027971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9276 + ... + 19133.

It is an arithmetic number, because the mean of its divisors is an integer number (12273120).

Almost surely, 2^140027961 is an apocalyptic number.

It is an amenable number.

140027961 is a deficient number, since it is larger than the sum of its proper divisors (56341959).

140027961 is a wasteful number, since it uses less digits than its factorization.

140027961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28496.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 140027961 is about 11833.3410751148. The cubic root of 140027961 is about 519.2839762953.

The spelling of 140027961 in words is "one hundred forty million, twenty-seven thousand, nine hundred sixty-one".