1125621542 has 8 divisors (see below), whose sum is σ = 1691674632. Its totient is φ = 561730000.

The previous prime is 1125621533. The next prime is 1125621547. The reversal of 1125621542 is 2451265211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125621547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539084 + ... + 541167.

It is an arithmetic number, because the mean of its divisors is an integer number (211459329).

Almost surely, 2^1125621542 is an apocalyptic number.

1125621542 is a deficient number, since it is larger than the sum of its proper divisors (566053090).

1125621542 is a wasteful number, since it uses less digits than its factorization.

1125621542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080774.

The product of its digits is 4800, while the sum is 29.

The square root of 1125621542 is about 33550.2837841947. The cubic root of 1125621542 is about 1040.2334109984.

Adding to 1125621542 its reverse (2451265211), we get a palindrome (3576886753).

The spelling of 1125621542 in words is "one billion, one hundred twenty-five million, six hundred twenty-one thousand, five hundred forty-two".