142421210 has 8 divisors (see below), whose sum is σ = 256358196. Its totient is φ = 56968480.

The previous prime is 142421183. The next prime is 142421239. The reversal of 142421210 is 12124241.

It can be written as a sum of positive squares in 2 ways, for example, as 139452481 + 2968729 = 11809^2 + 1723^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7121051 + ... + 7121070.

Almost surely, 2^142421210 is an apocalyptic number.

142421210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142421210 is a deficient number, since it is larger than the sum of its proper divisors (113936986).

142421210 is a wasteful number, since it uses less digits than its factorization.

142421210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14242128.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 142421210 is about 11934.0357800704. The cubic root of 142421210 is about 522.2256795875.

Adding to 142421210 its reverse (12124241), we get a palindrome (154545451).

The spelling of 142421210 in words is "one hundred forty-two million, four hundred twenty-one thousand, two hundred ten".