140120401 has 4 divisors (see below), whose sum is σ = 140145904. Its totient is φ = 140094900.

The previous prime is 140120399. The next prime is 140120413. The reversal of 140120401 is 104021041.

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, and also an emirpimes, since its reverse is a distinct semiprime: 104021041 = 499 ⋅208459.

It is a cyclic number.

It is not a de Polignac number, because 140120401 - 2¹ = 140120399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140120441) 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, 735 + ... + 16756.

It is an arithmetic number, because the mean of its divisors is an integer number (35036476).

Almost surely, 2^140120401 is an apocalyptic number.

It is an amenable number.

140120401 is a deficient number, since it is larger than the sum of its proper divisors (25503).

140120401 is an equidigital number, since it uses as much as digits as its factorization.

140120401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25502.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 140120401 is about 11837.2463436392. The cubic root of 140120401 is about 519.3982202679.

Adding to 140120401 its reverse (104021041), we get a palindrome (244141442).

The spelling of 140120401 in words is "one hundred forty million, one hundred twenty thousand, four hundred one".