140402052101 has 4 divisors (see below), whose sum is σ = 140489422752. Its totient is φ = 140314681452.

The previous prime is 140402052071. The next prime is 140402052103. The reversal of 140402052101 is 101250204041.

It is a happy number.

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 140402052101 - 2¹⁴ = 140402035717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140402052103) 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, 43682915 + ... + 43686128.

It is an arithmetic number, because the mean of its divisors is an integer number (35122355688).

Almost surely, 2^140402052101 is an apocalyptic number.

It is an amenable number.

140402052101 is a deficient number, since it is larger than the sum of its proper divisors (87370651).

140402052101 is an equidigital number, since it uses as much as digits as its factorization.

140402052101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87370650.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 140402052101 its reverse (101250204041), we get a palindrome (241652256142).

The spelling of 140402052101 in words is "one hundred forty billion, four hundred two million, fifty-two thousand, one hundred one".