142449876 has 18 divisors (see below), whose sum is σ = 360081722. Its totient is φ = 47483280.

The previous prime is 142449869. The next prime is 142449883. The reversal of 142449876 is 678944241.

It is an interprime number because it is at equal distance from previous prime (142449869) and next prime (142449883).

It can be written as a sum of positive squares in only one way, i.e., 113934276 + 28515600 = 10674^2 + 5340^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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, 1978435 + ... + 1978506.

Almost surely, 2^142449876 is an apocalyptic number.

It is an amenable number.

142449876 is an abundant number, since it is smaller than the sum of its proper divisors (217631846).

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

142449876 is a wasteful number, since it uses less digits than its factorization.

142449876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3956951 (or 3956946 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 142449876 is about 11935.2367383307. The cubic root of 142449876 is about 522.2607144372.

The spelling of 142449876 in words is "one hundred forty-two million, four hundred forty-nine thousand, eight hundred seventy-six".