142002324 has 18 divisors (see below), whose sum is σ = 358950410. Its totient is φ = 47334096.

The previous prime is 142002313. The next prime is 142002349. The reversal of 142002324 is 423200241.

It can be written as a sum of positive squares in only one way, i.e., 113806224 + 28196100 = 10668^2 + 5310^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 142002297 and 142002306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1972219 + ... + 1972290.

Almost surely, 2^142002324 is an apocalyptic number.

It is an amenable number.

142002324 is an abundant number, since it is smaller than the sum of its proper divisors (216948086).

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

142002324 is a wasteful number, since it uses less digits than its factorization.

142002324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944519 (or 3944514 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 142002324 is about 11916.4728002878. The cubic root of 142002324 is about 521.7131907502.

Adding to 142002324 its reverse (423200241), we get a palindrome (565202565).

The spelling of 142002324 in words is "one hundred forty-two million, two thousand, three hundred twenty-four".