140402134225 has 12 divisors (see below), whose sum is σ = 174392254476. Its totient is φ = 112132282880.

The previous prime is 140402134217. The next prime is 140402134231. The reversal of 140402134225 is 522431204041.

It can be written as a sum of positive squares in 6 ways, for example, as 11624505489 + 128777628736 = 107817^2 + 358856^2 .

It is not a de Polignac number, because 140402134225 - 2³ = 140402134217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140402134193 and 140402134202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4720492 + ... + 4750141.

It is an arithmetic number, because the mean of its divisors is an integer number (14532687873).

Almost surely, 2^140402134225 is an apocalyptic number.

It is an amenable number.

140402134225 is a deficient number, since it is larger than the sum of its proper divisors (33990120251).

140402134225 is an equidigital number, since it uses as much as digits as its factorization.

140402134225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9471236 (or 9471231 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 140402134225 its reverse (522431204041), we get a palindrome (662833338266).

The spelling of 140402134225 in words is "one hundred forty billion, four hundred two million, one hundred thirty-four thousand, two hundred twenty-five".