142024421 has 8 divisors (see below), whose sum is σ = 177069504. Its totient is φ = 110668320.

The previous prime is 142024403. The next prime is 142024427. The reversal of 142024421 is 124420241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142024421 - 2⁶ = 142024357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142024393 and 142024402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142024427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922160 + ... + 922313.

It is an arithmetic number, because the mean of its divisors is an integer number (22133688).

Almost surely, 2^142024421 is an apocalyptic number.

142024421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142024421 is a deficient number, since it is larger than the sum of its proper divisors (35045083).

142024421 is a wasteful number, since it uses less digits than its factorization.

142024421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844491.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 142024421 is about 11917.3999261584. The cubic root of 142024421 is about 521.7402506324.

Adding to 142024421 its reverse (124420241), we get a palindrome (266444662).

The spelling of 142024421 in words is "one hundred forty-two million, twenty-four thousand, four hundred twenty-one".