142612247 has 8 divisors (see below), whose sum is σ = 144947712. Its totient is φ = 140283000.

The previous prime is 142612243. The next prime is 142612273. The reversal of 142612247 is 742216241.

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

It is a cyclic number.

It is not a de Polignac number, because 142612247 - 2² = 142612243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142612243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72122 + ... + 74072.

It is an arithmetic number, because the mean of its divisors is an integer number (18118464).

Almost surely, 2^142612247 is an apocalyptic number.

142612247 is a deficient number, since it is larger than the sum of its proper divisors (2335465).

142612247 is a wasteful number, since it uses less digits than its factorization.

142612247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3109.

The product of its digits is 5376, while the sum is 29.

The square root of 142612247 is about 11942.0369702995. The cubic root of 142612247 is about 522.4590714489.

Adding to 142612247 its reverse (742216241), we get a palindrome (884828488).

The spelling of 142612247 in words is "one hundred forty-two million, six hundred twelve thousand, two hundred forty-seven".