142223450 has 12 divisors (see below), whose sum is σ = 264535710. Its totient is φ = 56889360.

The previous prime is 142223447. The next prime is 142223461. The reversal of 142223450 is 54322241.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 62710561 + 79512889 = 7919^2 + 8917^2 .

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, 1422185 + ... + 1422284.

Almost surely, 2^142223450 is an apocalyptic number.

142223450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142223450 is a deficient number, since it is larger than the sum of its proper divisors (122312260).

142223450 is a wasteful number, since it uses less digits than its factorization.

142223450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844481 (or 2844476 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 142223450 is about 11925.7473560360. The cubic root of 142223450 is about 521.9838542101.

Adding to 142223450 its reverse (54322241), we get a palindrome (196545691).

The spelling of 142223450 in words is "one hundred forty-two million, two hundred twenty-three thousand, four hundred fifty".