142001535 has 32 divisors (see below), whose sum is σ = 257564160. Its totient is φ = 66227328.

The previous prime is 142001533. The next prime is 142001537. The reversal of 142001535 is 535100241.

It is an interprime number because it is at equal distance from previous prime (142001533) and next prime (142001537).

It is not a de Polignac number, because 142001535 - 2¹ = 142001533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142001533) 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 31 ways as a sum of consecutive naturals, for example, 15459 + ... + 22868.

It is an arithmetic number, because the mean of its divisors is an integer number (8048880).

Almost surely, 2^142001535 is an apocalyptic number.

142001535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142001535 is a deficient number, since it is larger than the sum of its proper divisors (115562625).

142001535 is a wasteful number, since it uses less digits than its factorization.

142001535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38367.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 142001535 is about 11916.4396948082. The cubic root of 142001535 is about 521.7122244926.

Adding to 142001535 its reverse (535100241), we get a palindrome (677101776).

The spelling of 142001535 in words is "one hundred forty-two million, one thousand, five hundred thirty-five".