142149421424 has 80 divisors (see below), whose sum is σ = 311996414880. Its totient is φ = 62334074880.

The previous prime is 142149421409. The next prime is 142149421429. The reversal of 142149421424 is 424124941241.

It is a happy number.

It is a super-2 number, since 2×142149421424² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142149421429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89792 + ... + 540704.

It is an arithmetic number, because the mean of its divisors is an integer number (3899955186).

Almost surely, 2^142149421424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142149421424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155998207440).

142149421424 is an abundant number, since it is smaller than the sum of its proper divisors (169846993456).

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

142149421424 is a wasteful number, since it uses less digits than its factorization.

142149421424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451018 (or 451012 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The spelling of 142149421424 in words is "one hundred forty-two billion, one hundred forty-nine million, four hundred twenty-one thousand, four hundred twenty-four".