140415881 has 2 divisors, whose sum is σ = 140415882. Its totient is φ = 140415880.

The previous prime is 140415841. The next prime is 140415901. The reversal of 140415881 is 188514041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95726656 + 44689225 = 9784^2 + 6685^2 .

It is a cyclic number.

It is not a de Polignac number, because 140415881 - 2¹⁸ = 140153737 is a prime.

It is a super-2 number, since 2×140415881² = 39433239274012322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140415841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70207940 + 70207941.

It is an arithmetic number, because the mean of its divisors is an integer number (70207941).

Almost surely, 2^140415881 is an apocalyptic number.

It is an amenable number.

140415881 is a deficient number, since it is larger than the sum of its proper divisors (1).

140415881 is an equidigital number, since it uses as much as digits as its factorization.

140415881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 140415881 is about 11849.7207140084. The cubic root of 140415881 is about 519.7630589660.

The spelling of 140415881 in words is "one hundred forty million, four hundred fifteen thousand, eight hundred eighty-one".