142247460 has 48 divisors (see below), whose sum is σ = 398938176. Its totient is φ = 37871232.

The previous prime is 142247447. The next prime is 142247467. The reversal of 142247460 is 64742241.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (142247467) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 44847 + ... + 47913.

It is an arithmetic number, because the mean of its divisors is an integer number (8311212).

Almost surely, 2^142247460 is an apocalyptic number.

142247460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142247460 is an abundant number, since it is smaller than the sum of its proper divisors (256690716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142247460 is a wasteful number, since it uses less digits than its factorization.

142247460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852 (or 3850 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 142247460 is about 11926.7539590620. The cubic root of 142247460 is about 522.0132261296.

The spelling of 142247460 in words is "one hundred forty-two million, two hundred forty-seven thousand, four hundred sixty".