142407897 has 8 divisors (see below), whose sum is σ = 192711456. Its totient is φ = 93521472.

The previous prime is 142407877. The next prime is 142407899. The reversal of 142407897 is 798704241.

It is a happy number.

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

It is not a de Polignac number, because 142407897 - 2¹¹ = 142405849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142407899) 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, 354048 + ... + 354449.

It is an arithmetic number, because the mean of its divisors is an integer number (24088932).

Almost surely, 2^142407897 is an apocalyptic number.

It is an amenable number.

142407897 is a deficient number, since it is larger than the sum of its proper divisors (50303559).

142407897 is an equidigital number, since it uses as much as digits as its factorization.

142407897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708567.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 142407897 is about 11933.4779926055. The cubic root of 142407897 is about 522.2094071818.

The spelling of 142407897 in words is "one hundred forty-two million, four hundred seven thousand, eight hundred ninety-seven".