2123540354 has 16 divisors (see below), whose sum is σ = 3442054392. Its totient is φ = 976747008.

The previous prime is 2123540351. The next prime is 2123540359. The reversal of 2123540354 is 4530453212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2122721329 + 819025 = 46073^2 + 905^2 .

It is not an unprimeable number, because it can be changed into a prime (2123540351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131759 + ... + 146994.

Almost surely, 2^2123540354 is an apocalyptic number.

2123540354 is a deficient number, since it is larger than the sum of its proper divisors (1318514038).

2123540354 is a wasteful number, since it uses less digits than its factorization.

2123540354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279061.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 2123540354 is about 46081.8874830448. The cubic root of 2123540354 is about 1285.3463623444.

Adding to 2123540354 its reverse (4530453212), we get a palindrome (6653993566).

The spelling of 2123540354 in words is "two billion, one hundred twenty-three million, five hundred forty thousand, three hundred fifty-four".