140621361 has 4 divisors (see below), whose sum is σ = 187495152. Its totient is φ = 93747572.

The previous prime is 140621359. The next prime is 140621389. The reversal of 140621361 is 163126041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140621361 - 2¹ = 140621359 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140621461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23436891 + ... + 23436896.

It is an arithmetic number, because the mean of its divisors is an integer number (46873788).

Almost surely, 2^140621361 is an apocalyptic number.

It is an amenable number.

140621361 is a deficient number, since it is larger than the sum of its proper divisors (46873791).

140621361 is an equidigital number, since it uses as much as digits as its factorization.

140621361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46873790.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 140621361 is about 11858.3877909267. The cubic root of 140621361 is about 520.0164701391.

The spelling of 140621361 in words is "one hundred forty million, six hundred twenty-one thousand, three hundred sixty-one".