142319457 has 32 divisors (see below), whose sum is σ = 244582400. Its totient is φ = 80104464.

The previous prime is 142319453. The next prime is 142319473. The reversal of 142319457 is 754913241.

It is not a de Polignac number, because 142319457 - 2² = 142319453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142319453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7044 + ... + 18282.

It is an arithmetic number, because the mean of its divisors is an integer number (7643200).

Almost surely, 2^142319457 is an apocalyptic number.

It is an amenable number.

142319457 is a deficient number, since it is larger than the sum of its proper divisors (102262943).

142319457 is a wasteful number, since it uses less digits than its factorization.

142319457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11322 (or 11316 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 142319457 is about 11929.7718754384. The cubic root of 142319457 is about 522.1012817082.

The spelling of 142319457 in words is "one hundred forty-two million, three hundred nineteen thousand, four hundred fifty-seven".