1025130542 has 4 divisors (see below), whose sum is σ = 1537695816. Its totient is φ = 512565270.

The previous prime is 1025130521. The next prime is 1025130551. The reversal of 1025130542 is 2450315201.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256282634 + ... + 256282637.

It is an arithmetic number, because the mean of its divisors is an integer number (384423954).

Almost surely, 2^1025130542 is an apocalyptic number.

1025130542 is a deficient number, since it is larger than the sum of its proper divisors (512565274).

1025130542 is an equidigital number, since it uses as much as digits as its factorization.

1025130542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512565273.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1025130542 is about 32017.6598457789. The cubic root of 1025130542 is about 1008.3076393395.

Adding to 1025130542 its reverse (2450315201), we get a palindrome (3475445743).

The spelling of 1025130542 in words is "one billion, twenty-five million, one hundred thirty thousand, five hundred forty-two".