2111400542 has 4 divisors (see below), whose sum is σ = 3167100816. Its totient is φ = 1055700270.

The previous prime is 2111400541. The next prime is 2111400587. The reversal of 2111400542 is 2450041112.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111400541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527850134 + ... + 527850137.

It is an arithmetic number, because the mean of its divisors is an integer number (791775204).

Almost surely, 2^2111400542 is an apocalyptic number.

2111400542 is a deficient number, since it is larger than the sum of its proper divisors (1055700274).

2111400542 is a wasteful number, since it uses less digits than its factorization.

2111400542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055700273.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2111400542 is about 45949.9786942279. The cubic root of 2111400542 is about 1282.8923327521.

Adding to 2111400542 its reverse (2450041112), we get a palindrome (4561441654).

The spelling of 2111400542 in words is "two billion, one hundred eleven million, four hundred thousand, five hundred forty-two".