142749212 has 6 divisors (see below), whose sum is σ = 249811128. Its totient is φ = 71374604.

The previous prime is 142749181. The next prime is 142749239. The reversal of 142749212 is 212947241.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17843648 + ... + 17843655.

It is an arithmetic number, because the mean of its divisors is an integer number (41635188).

Almost surely, 2^142749212 is an apocalyptic number.

It is an amenable number.

142749212 is a deficient number, since it is larger than the sum of its proper divisors (107061916).

142749212 is a wasteful number, since it uses less digits than its factorization.

142749212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35687307 (or 35687305 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 142749212 is about 11947.7701685294. The cubic root of 142749212 is about 522.6262747388.

The spelling of 142749212 in words is "one hundred forty-two million, seven hundred forty-nine thousand, two hundred twelve".