142148939 has 8 divisors (see below), whose sum is σ = 143265120. Its totient is φ = 141037056.

The previous prime is 142148933. The next prime is 142148953. The reversal of 142148939 is 939841241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142148939 - 2¹² = 142144843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142148896 and 142148905.

It is not an unprimeable number, because it can be changed into a prime (142148933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97514 + ... + 98960.

It is an arithmetic number, because the mean of its divisors is an integer number (17908140).

Almost surely, 2^142148939 is an apocalyptic number.

142148939 is a deficient number, since it is larger than the sum of its proper divisors (1116181).

142148939 is a wasteful number, since it uses less digits than its factorization.

142148939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149.

The product of its digits is 62208, while the sum is 41.

The square root of 142148939 is about 11922.6229916072. The cubic root of 142148939 is about 521.8926823416.

The spelling of 142148939 in words is "one hundred forty-two million, one hundred forty-eight thousand, nine hundred thirty-nine".