142969849 has 9 divisors (see below), whose sum is σ = 157293381. Its totient is φ = 129853020.

The previous prime is 142969837. The next prime is 142969859. The reversal of 142969849 is 948969241.

The square root of 142969849 is 11957.

It is a perfect power (a square), and thus also a powerful number.

142969849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142969849 - 2²³ = 134581241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142969796 and 142969805.

It is not an unprimeable number, because it can be changed into a prime (142969859) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 130984 + ... + 132070.

Almost surely, 2^142969849 is an apocalyptic number.

142969849 is the 11957-th square number.

142969849 is the 5979-th centered octagonal number.

It is an amenable number.

142969849 is a deficient number, since it is larger than the sum of its proper divisors (14323532).

142969849 is an frugal number, since it uses more digits than its factorization.

142969849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196 (or 1098 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 52.

The cubic root of 142969849 is about 522.8953978478.

The spelling of 142969849 in words is "one hundred forty-two million, nine hundred sixty-nine thousand, eight hundred forty-nine".