140120440234402 has 4 divisors (see below), whose sum is σ = 210180660351606. Its totient is φ = 70060220117200.

The previous prime is 140120440234399. The next prime is 140120440234417. The reversal of 140120440234402 is 204432044021041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 140091345768361 + 29094466041 = 11836019^2 + 170571^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35030110058599 + ... + 35030110058602.

Almost surely, 2^{140120440234402} is an apocalyptic number.

140120440234402 is a deficient number, since it is larger than the sum of its proper divisors (70060220117204).

140120440234402 is an equidigital number, since it uses as much as digits as its factorization.

140120440234402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70060220117203.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 140120440234402 its reverse (204432044021041), we get a palindrome (344552484255443).

The spelling of 140120440234402 in words is "one hundred forty trillion, one hundred twenty billion, four hundred forty million, two hundred thirty-four thousand, four hundred two".