142645021440 has 144 divisors (see below), whose sum is σ = 466167787008. Its totient is φ = 37154009088.

The previous prime is 142645021429. The next prime is 142645021481. The reversal of 142645021440 is 44120546241.

142645021440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 266824 + ... + 597063.

Almost surely, 2^142645021440 is an apocalyptic number.

142645021440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142645021440 is an abundant number, since it is smaller than the sum of its proper divisors (323522765568).

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

142645021440 is an equidigital number, since it uses as much as digits as its factorization.

142645021440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863954 (or 863940 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

Adding to 142645021440 its reverse (44120546241), we get a palindrome (186765567681).

The spelling of 142645021440 in words is "one hundred forty-two billion, six hundred forty-five million, twenty-one thousand, four hundred forty".