142748424 has 96 divisors (see below), whose sum is σ = 475849920. Its totient is φ = 37646208.

The previous prime is 142748423. The next prime is 142748449. The reversal of 142748424 is 424847241.

It is a super-2 number, since 2×142748424² = 40754225108967552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (142748423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4342 + ... + 17445.

It is an arithmetic number, because the mean of its divisors is an integer number (4956770).

Almost surely, 2^142748424 is an apocalyptic number.

142748424 is a gapful number since it is divisible by the number (14) 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 142748424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237924960).

142748424 is an abundant number, since it is smaller than the sum of its proper divisors (333101496).

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

142748424 is a wasteful number, since it uses less digits than its factorization.

142748424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21819 (or 21812 counting only the distinct ones).

The product of its digits is 57344, while the sum is 36.

The square root of 142748424 is about 11947.7371916192. The cubic root of 142748424 is about 522.6253130750.

The spelling of 142748424 in words is "one hundred forty-two million, seven hundred forty-eight thousand, four hundred twenty-four".