142407219 has 4 divisors (see below), whose sum is σ = 189876296. Its totient is φ = 94938144.

The previous prime is 142407203. The next prime is 142407257. The reversal of 142407219 is 912704241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 912704241 = 3 ⋅304234747.

It is not a de Polignac number, because 142407219 - 2⁴ = 142407203 is a prime.

It is a super-2 number, since 2×142407219² = 40559632046627922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142407269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23734534 + ... + 23734539.

It is an arithmetic number, because the mean of its divisors is an integer number (47469074).

Almost surely, 2^142407219 is an apocalyptic number.

142407219 is a deficient number, since it is larger than the sum of its proper divisors (47469077).

142407219 is an equidigital number, since it uses as much as digits as its factorization.

142407219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47469076.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 142407219 is about 11933.4495850948. The cubic root of 142407219 is about 522.2085784390.

The spelling of 142407219 in words is "one hundred forty-two million, four hundred seven thousand, two hundred nineteen".