140135233540 has 24 divisors (see below), whose sum is σ = 294356061720. Its totient is φ = 56040365568.

The previous prime is 140135233531. The next prime is 140135233541. The reversal of 140135233540 is 45332531041.

It can be written as a sum of positive squares in 4 ways, for example, as 284664384 + 139850569156 = 16872^2 + 373966^2 .

It is not an unprimeable number, because it can be changed into a prime (140135233541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 774085 + ... + 937804.

It is an arithmetic number, because the mean of its divisors is an integer number (12264835905).

Almost surely, 2^140135233540 is an apocalyptic number.

140135233540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140135233540 is an abundant number, since it is smaller than the sum of its proper divisors (154220828180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140135233540 is a wasteful number, since it uses less digits than its factorization.

140135233540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715991 (or 1715989 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 140135233540 its reverse (45332531041), we get a palindrome (185467764581).

The spelling of 140135233540 in words is "one hundred forty billion, one hundred thirty-five million, two hundred thirty-three thousand, five hundred forty".