140440342020442 has 16 divisors (see below), whose sum is σ = 218352811465800. Its totient is φ = 67665585816640.

The previous prime is 140440342020439. The next prime is 140440342020467. The reversal of 140440342020442 is 244020243044041.

It can be written as a sum of positive squares in 4 ways, for example, as 137845468859121 + 2594873161321 = 11740761^2 + 1610861^2 .

It is a junction number, because it is equal to n+sod(n) for n = 140440342020398 and 140440342020407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2378541409 + ... + 2378600452.

Almost surely, 2^{140440342020442} is an apocalyptic number.

140440342020442 is a deficient number, since it is larger than the sum of its proper divisors (77912469445358).

140440342020442 is a wasteful number, since it uses less digits than its factorization.

140440342020442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4757142401.

The product of its (nonzero) digits is 98304, while the sum is 34.

Adding to 140440342020442 its reverse (244020243044041), we get a palindrome (384460585064483).

The spelling of 140440342020442 in words is "one hundred forty trillion, four hundred forty billion, three hundred forty-two million, twenty thousand, four hundred forty-two".