140401231440 has 80 divisors (see below), whose sum is σ = 435537623808. Its totient is φ = 37415054848.

The previous prime is 140401231427. The next prime is 140401231457. The reversal of 140401231440 is 44132104041.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 140401231440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160174 + ... + 553586.

Almost surely, 2^140401231440 is an apocalyptic number.

140401231440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140401231440 is an abundant number, since it is smaller than the sum of its proper divisors (295136392368).

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

140401231440 is a wasteful number, since it uses less digits than its factorization.

140401231440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394916 (or 394910 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 140401231440 its reverse (44132104041), we get a palindrome (184533335481).

The spelling of 140401231440 in words is "one hundred forty billion, four hundred one million, two hundred thirty-one thousand, four hundred forty".