140021411 has 2 divisors, whose sum is σ = 140021412. Its totient is φ = 140021410.

The previous prime is 140021407. The next prime is 140021423. The reversal of 140021411 is 114120041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140021411 - 2² = 140021407 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (140021461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70010705 + 70010706.

It is an arithmetic number, because the mean of its divisors is an integer number (70010706).

Almost surely, 2^140021411 is an apocalyptic number.

140021411 is a deficient number, since it is larger than the sum of its proper divisors (1).

140021411 is an equidigital number, since it uses as much as digits as its factorization.

140021411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 140021411 is about 11833.0643114960. The cubic root of 140021411 is about 519.2758794289.

Adding to 140021411 its reverse (114120041), we get a palindrome (254141452).

The spelling of 140021411 in words is "one hundred forty million, twenty-one thousand, four hundred eleven".