2142111542 has 8 divisors (see below), whose sum is σ = 3213616032. Its totient is φ = 1070906200.

The previous prime is 2142111533. The next prime is 2142111553. The reversal of 2142111542 is 2451112412.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55934 + ... + 86097.

It is an arithmetic number, because the mean of its divisors is an integer number (401702004).

Almost surely, 2^2142111542 is an apocalyptic number.

2142111542 is a deficient number, since it is larger than the sum of its proper divisors (1071504490).

2142111542 is a wasteful number, since it uses less digits than its factorization.

2142111542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149574.

The product of its digits is 640, while the sum is 23.

The square root of 2142111542 is about 46282.9508782662. The cubic root of 2142111542 is about 1289.0824438803.

Adding to 2142111542 its reverse (2451112412), we get a palindrome (4593223954).

The spelling of 2142111542 in words is "two billion, one hundred forty-two million, one hundred eleven thousand, five hundred forty-two".