142947470 has 16 divisors (see below), whose sum is σ = 257495328. Its totient is φ = 57136800.

The previous prime is 142947451. The next prime is 142947521. The reversal of 142947470 is 74749241.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11495 + ... + 20445.

It is an arithmetic number, because the mean of its divisors is an integer number (16093458).

Almost surely, 2^142947470 is an apocalyptic number.

142947470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142947470 is a deficient number, since it is larger than the sum of its proper divisors (114547858).

142947470 is a wasteful number, since it uses less digits than its factorization.

142947470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10555.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 142947470 is about 11956.0641517182. The cubic root of 142947470 is about 522.8681135712.

The spelling of 142947470 in words is "one hundred forty-two million, nine hundred forty-seven thousand, four hundred seventy".