142407898 has 4 divisors (see below), whose sum is σ = 213611850. Its totient is φ = 71203948.

The previous prime is 142407877. The next prime is 142407899. The reversal of 142407898 is 898704241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 898704241 = 73 ⋅12311017.

It can be written as a sum of positive squares in only one way, i.e., 123943689 + 18464209 = 11133^2 + 4297^2 .

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 as a sum of consecutive naturals, namely, 35601973 + ... + 35601976.

Almost surely, 2^142407898 is an apocalyptic number.

142407898 is a deficient number, since it is larger than the sum of its proper divisors (71203952).

142407898 is an equidigital number, since it uses as much as digits as its factorization.

142407898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71203951.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 142407898 is about 11933.4780345044. The cubic root of 142407898 is about 522.2094084041.

The spelling of 142407898 in words is "one hundred forty-two million, four hundred seven thousand, eight hundred ninety-eight".