140424981 has 16 divisors (see below), whose sum is σ = 200107584. Its totient is φ = 87282944.

The previous prime is 140424979. The next prime is 140424997. The reversal of 140424981 is 189424041.

It is a cyclic number.

It is not a de Polignac number, because 140424981 - 2¹ = 140424979 is a prime.

It is a super-2 number, since 2×140424981² = 39438350577700722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140424181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7410 + ... + 18323.

It is an arithmetic number, because the mean of its divisors is an integer number (12506724).

Almost surely, 2^140424981 is an apocalyptic number.

It is an amenable number.

140424981 is a deficient number, since it is larger than the sum of its proper divisors (59682603).

140424981 is a wasteful number, since it uses less digits than its factorization.

140424981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25860.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 140424981 is about 11850.1046830819. The cubic root of 140424981 is about 519.7742869023.

The spelling of 140424981 in words is "one hundred forty million, four hundred twenty-four thousand, nine hundred eighty-one".