2121754 has 8 divisors (see below), whose sum is σ = 3189780. Its totient is φ = 1058496.

The previous prime is 2121751. The next prime is 2121761. The reversal of 2121754 is 4571212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1896129 + 225625 = 1377^2 + 475^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2121751) 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, 292 + ... + 2080.

2^2121754 is an apocalyptic number.

2121754 is a deficient number, since it is larger than the sum of its proper divisors (1068026).

2121754 is a wasteful number, since it uses less digits than its factorization.

2121754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384.

The product of its digits is 560, while the sum is 22.

The square root of 2121754 is about 1456.6241793956. The cubic root of 2121754 is about 128.4985843687.

Adding to 2121754 its reverse (4571212), we get a palindrome (6692966).

The spelling of 2121754 in words is "two million, one hundred twenty-one thousand, seven hundred fifty-four".