142780071 has 24 divisors (see below), whose sum is σ = 222009984. Its totient is φ = 81384240.

The previous prime is 142780063. The next prime is 142780073. The reversal of 142780071 is 170087241.

It is not a de Polignac number, because 142780071 - 2³ = 142780063 is a prime.

It is a super-2 number, since 2×142780071² = 40772297349530082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142780073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72976 + ... + 74906.

It is an arithmetic number, because the mean of its divisors is an integer number (9250416).

Almost surely, 2^142780071 is an apocalyptic number.

142780071 is a deficient number, since it is larger than the sum of its proper divisors (79229913).

142780071 is a wasteful number, since it uses less digits than its factorization.

142780071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451 (or 2444 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 142780071 is about 11949.0615112652. The cubic root of 142780071 is about 522.6639318345.

The spelling of 142780071 in words is "one hundred forty-two million, seven hundred eighty thousand, seventy-one".