Search a number
-
+
142387007 = 7191070579
BaseRepresentation
bin10000111110010…
…10011100111111
3100220221000020212
420133022130333
5242422341012
622043503035
73346161320
oct1037123477
9326830225
10142387007
1173412514
123b827a7b
1323664989
1414ca6447
15c778b22
hex87ca73f

142387007 has 8 divisors (see below), whose sum is σ = 171292800. Its totient is φ = 115622424.

The previous prime is 142386983. The next prime is 142387051. The reversal of 142387007 is 700783241.

It is a happy number.

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 142387007 - 26 = 142386943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142387057) 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, 535157 + ... + 535422.

It is an arithmetic number, because the mean of its divisors is an integer number (21411600).

Almost surely, 2142387007 is an apocalyptic number.

142387007 is a deficient number, since it is larger than the sum of its proper divisors (28905793).

142387007 is a wasteful number, since it uses less digits than its factorization.

142387007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070605.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 142387007 is about 11932.6026917852. The cubic root of 142387007 is about 522.1838714070.

The spelling of 142387007 in words is "one hundred forty-two million, three hundred eighty-seven thousand, seven".

Divisors: 1 7 19 133 1070579 7494053 20341001 142387007