142893547 has 16 divisors (see below), whose sum is σ = 153256320. Its totient is φ = 133209000.

The previous prime is 142893523. The next prime is 142893587. The reversal of 142893547 is 745398241.

It is not a de Polignac number, because 142893547 - 2⁷ = 142893419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142893587) 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, 569172 + ... + 569422.

It is an arithmetic number, because the mean of its divisors is an integer number (9578520).

Almost surely, 2^142893547 is an apocalyptic number.

142893547 is a deficient number, since it is larger than the sum of its proper divisors (10362773).

142893547 is an frugal number, since it uses more digits than its factorization.

142893547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 353 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 142893547 is about 11953.8088908933. The cubic root of 142893547 is about 522.8023594327.

The spelling of 142893547 in words is "one hundred forty-two million, eight hundred ninety-three thousand, five hundred forty-seven".