142449966 has 12 divisors (see below), whose sum is σ = 308641632. Its totient is φ = 47483316.

The previous prime is 142449917. The next prime is 142449977. The reversal of 142449966 is 669944241.

142449966 is a `hidden beast` number, since 142 + 449 + 9 + 66 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3956926 + ... + 3956961.

It is an arithmetic number, because the mean of its divisors is an integer number (25720136).

Almost surely, 2^142449966 is an apocalyptic number.

142449966 is an abundant number, since it is smaller than the sum of its proper divisors (166191666).

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

142449966 is a wasteful number, since it uses less digits than its factorization.

142449966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7913895 (or 7913892 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 142449966 is about 11935.2405086785. The cubic root of 142449966 is about 522.2608244255.

The spelling of 142449966 in words is "one hundred forty-two million, four hundred forty-nine thousand, nine hundred sixty-six".