142880069 has 4 divisors (see below), whose sum is σ = 143119200. Its totient is φ = 142640940.

The previous prime is 142880029. The next prime is 142880077. The reversal of 142880069 is 960088241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142880069 - 2⁸ = 142879813 is a prime.

It is a super-2 number, since 2×142880069² = 40829428234889522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142880009) 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, 118667 + ... + 119864.

It is an arithmetic number, because the mean of its divisors is an integer number (35779800).

Almost surely, 2^142880069 is an apocalyptic number.

It is an amenable number.

142880069 is a deficient number, since it is larger than the sum of its proper divisors (239131).

142880069 is an equidigital number, since it uses as much as digits as its factorization.

142880069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239130.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 142880069 is about 11953.2451242330. The cubic root of 142880069 is about 522.7859216674.

The spelling of 142880069 in words is "one hundred forty-two million, eight hundred eighty thousand, sixty-nine".