142097505 has 32 divisors (see below), whose sum is σ = 252720000. Its totient is φ = 67591680.

The previous prime is 142097503. The next prime is 142097563. The reversal of 142097505 is 505790241.

It is not a de Polignac number, because 142097505 - 2¹ = 142097503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (142097503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 621 + ... + 16869.

It is an arithmetic number, because the mean of its divisors is an integer number (7897500).

Almost surely, 2^142097505 is an apocalyptic number.

142097505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142097505 is a deficient number, since it is larger than the sum of its proper divisors (110622495).

142097505 is a wasteful number, since it uses less digits than its factorization.

142097505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16321.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 142097505 is about 11920.4658046571. The cubic root of 142097505 is about 521.8297289665.

The spelling of 142097505 in words is "one hundred forty-two million, ninety-seven thousand, five hundred five".