142779061 has 4 divisors (see below), whose sum is σ = 142803072. Its totient is φ = 142755052.

The previous prime is 142779059. The next prime is 142779089. The reversal of 142779061 is 160977241.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 142779061 - 2¹ = 142779059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142779061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142779001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4266 + ... + 17428.

It is an arithmetic number, because the mean of its divisors is an integer number (35700768).

Almost surely, 2^142779061 is an apocalyptic number.

It is an amenable number.

142779061 is a deficient number, since it is larger than the sum of its proper divisors (24011).

142779061 is a wasteful number, since it uses less digits than its factorization.

142779061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24010.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 142779061 is about 11949.0192484572. The cubic root of 142779061 is about 522.6626994220.

The spelling of 142779061 in words is "one hundred forty-two million, seven hundred seventy-nine thousand, sixty-one".