140744881 has 2 divisors, whose sum is σ = 140744882. Its totient is φ = 140744880.

The previous prime is 140744861. The next prime is 140744897. The reversal of 140744881 is 188447041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77000625 + 63744256 = 8775^2 + 7984^2 .

It is a cyclic number.

It is not a de Polignac number, because 140744881 - 2¹³ = 140736689 is a prime.

It is a super-2 number, since 2×140744881² = 39618243055408322, which contains 22 as substring.

It is a Chen prime.

It is equal to p_7951852 and since 140744881 and 7951852 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140744881.

It is not a weakly prime, because it can be changed into another prime (140744831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70372440 + 70372441.

It is an arithmetic number, because the mean of its divisors is an integer number (70372441).

Almost surely, 2^140744881 is an apocalyptic number.

It is an amenable number.

140744881 is a deficient number, since it is larger than the sum of its proper divisors (1).

140744881 is an equidigital number, since it uses as much as digits as its factorization.

140744881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 140744881 is about 11863.5947756150. The cubic root of 140744881 is about 520.1686841795.

The spelling of 140744881 in words is "one hundred forty million, seven hundred forty-four thousand, eight hundred eighty-one".