140405230142 has 4 divisors (see below), whose sum is σ = 210607845216. Its totient is φ = 70202615070.

The previous prime is 140405230139. The next prime is 140405230151. The reversal of 140405230142 is 241032504041.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35101307534 + ... + 35101307537.

It is an arithmetic number, because the mean of its divisors is an integer number (52651961304).

Almost surely, 2^140405230142 is an apocalyptic number.

140405230142 is a deficient number, since it is larger than the sum of its proper divisors (70202615074).

140405230142 is an equidigital number, since it uses as much as digits as its factorization.

140405230142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70202615073.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 140405230142 its reverse (241032504041), we get a palindrome (381437734183).

The spelling of 140405230142 in words is "one hundred forty billion, four hundred five million, two hundred thirty thousand, one hundred forty-two".