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142370779 = 6710631999
BaseRepresentation
bin10000111110001…
…10011111011011
3100220220011222211
420133012133123
5242421331104
622043255551
73346063105
oct1037063733
9326804884
10142370779
1173401301
123b81a5b7
132365a485
1414ca0575
15c773e04
hex87c67db

142370779 has 8 divisors (see below), whose sum is σ = 144704000. Its totient is φ = 140043816.

The previous prime is 142370771. The next prime is 142370797. The reversal of 142370779 is 977073241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142370779 - 23 = 142370771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142370771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70222 + ... + 72220.

It is an arithmetic number, because the mean of its divisors is an integer number (18088000).

Almost surely, 2142370779 is an apocalyptic number.

142370779 is a deficient number, since it is larger than the sum of its proper divisors (2333221).

142370779 is a wasteful number, since it uses less digits than its factorization.

142370779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 142370779 is about 11931.9226866419. The cubic root of 142370779 is about 522.1640327012.

The spelling of 142370779 in words is "one hundred forty-two million, three hundred seventy thousand, seven hundred seventy-nine".

Divisors: 1 67 1063 1999 71221 133933 2124937 142370779