142951643 has 8 divisors (see below), whose sum is σ = 148878000. Its totient is φ = 137091808.

The previous prime is 142951639. The next prime is 142951673. The reversal of 142951643 is 346159241.

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 142951643 - 2² = 142951639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142951603) 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, 12221 + ... + 20862.

It is an arithmetic number, because the mean of its divisors is an integer number (18609750).

Almost surely, 2^142951643 is an apocalyptic number.

142951643 is a deficient number, since it is larger than the sum of its proper divisors (5926357).

142951643 is a wasteful number, since it uses less digits than its factorization.

142951643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33261.

The product of its digits is 25920, while the sum is 35.

The square root of 142951643 is about 11956.2386643961. The cubic root of 142951643 is about 522.8732014715.

The spelling of 142951643 in words is "one hundred forty-two million, nine hundred fifty-one thousand, six hundred forty-three".