142509470 has 32 divisors (see below), whose sum is σ = 274687200. Its totient is φ = 53042176.

The previous prime is 142509427. The next prime is 142509473. The reversal of 142509470 is 74905241.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142509473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10421 + ... + 19839.

It is an arithmetic number, because the mean of its divisors is an integer number (8583975).

Almost surely, 2^142509470 is an apocalyptic number.

142509470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142509470 is a deficient number, since it is larger than the sum of its proper divisors (132177730).

142509470 is a wasteful number, since it uses less digits than its factorization.

142509470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9532.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 142509470 is about 11937.7330343747. The cubic root of 142509470 is about 522.3335336554. Note that the first 3 decimals are identical.

The spelling of 142509470 in words is "one hundred forty-two million, five hundred nine thousand, four hundred seventy".