142152649 has 2 divisors, whose sum is σ = 142152650. Its totient is φ = 142152648.

The previous prime is 142152641. The next prime is 142152697. The reversal of 142152649 is 946251241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120297024 + 21855625 = 10968^2 + 4675^2 .

It is a cyclic number.

It is not a de Polignac number, because 142152649 - 2³ = 142152641 is a prime.

It is not a weakly prime, because it can be changed into another prime (142152641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71076324 + 71076325.

It is an arithmetic number, because the mean of its divisors is an integer number (71076325).

Almost surely, 2^142152649 is an apocalyptic number.

It is an amenable number.

142152649 is a deficient number, since it is larger than the sum of its proper divisors (1).

142152649 is an equidigital number, since it uses as much as digits as its factorization.

142152649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 34.

The square root of 142152649 is about 11922.7785771606. The cubic root of 142152649 is about 521.8972226616.

The spelling of 142152649 in words is "one hundred forty-two million, one hundred fifty-two thousand, six hundred forty-nine".