142154020440 has 128 divisors (see below), whose sum is σ = 474066432000. Its totient is φ = 37890163584.

The previous prime is 142154020439. The next prime is 142154020457. The reversal of 142154020440 is 44020451241.

142154020440 is a `hidden beast` number, since 1 + 4 + 215 + 4 + 0 + 2 + 0 + 440 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2388727 + ... + 2447513.

It is an arithmetic number, because the mean of its divisors is an integer number (3703644000).

Almost surely, 2^142154020440 is an apocalyptic number.

142154020440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142154020440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237033216000).

142154020440 is an abundant number, since it is smaller than the sum of its proper divisors (331912411560).

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

142154020440 is a wasteful number, since it uses less digits than its factorization.

142154020440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61046 (or 61036 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 142154020440 its reverse (44020451241), we get a palindrome (186174471681).

The spelling of 142154020440 in words is "one hundred forty-two billion, one hundred fifty-four million, twenty thousand, four hundred forty".