142407224 has 8 divisors (see below), whose sum is σ = 267013560. Its totient is φ = 71203608.

The previous prime is 142407203. The next prime is 142407257. The reversal of 142407224 is 422704241.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 142407193 and 142407202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8900444 + ... + 8900459.

It is an arithmetic number, because the mean of its divisors is an integer number (33376695).

Almost surely, 2^142407224 is an apocalyptic number.

It is an amenable number.

142407224 is a deficient number, since it is larger than the sum of its proper divisors (124606336).

142407224 is a wasteful number, since it uses less digits than its factorization.

142407224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17800909 (or 17800905 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 142407224 is about 11933.4497945900. The cubic root of 142407224 is about 522.2085845507.

The spelling of 142407224 in words is "one hundred forty-two million, four hundred seven thousand, two hundred twenty-four".