1525142 has 4 divisors (see below), whose sum is σ = 2287716. Its totient is φ = 762570.

The previous prime is 1525133. The next prime is 1525157. The reversal of 1525142 is 2415251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2415251 = 647 ⋅3733.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 381284 + ... + 381287.

It is an arithmetic number, because the mean of its divisors is an integer number (571929).

2^1525142 is an apocalyptic number.

1525142 is a deficient number, since it is larger than the sum of its proper divisors (762574).

1525142 is an equidigital number, since it uses as much as digits as its factorization.

1525142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762573.

The product of its digits is 400, while the sum is 20.

The square root of 1525142 is about 1234.9663963040. The cubic root of 1525142 is about 115.1074484103.

The spelling of 1525142 in words is "one million, five hundred twenty-five thousand, one hundred forty-two".