40234451 has 4 divisors (see below), whose sum is σ = 40249032. Its totient is φ = 40219872.

The previous prime is 40234433. The next prime is 40234471. The reversal of 40234451 is 15443204.

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

It is a cyclic number.

It is not a de Polignac number, because 40234451 - 2⁶ = 40234387 is a prime.

It is a super-2 number, since 2×40234451² = 3237622094542802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40234421) 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, 1745 + ... + 9138.

It is an arithmetic number, because the mean of its divisors is an integer number (10062258).

Almost surely, 2^40234451 is an apocalyptic number.

40234451 is a deficient number, since it is larger than the sum of its proper divisors (14581).

40234451 is a wasteful number, since it uses less digits than its factorization.

40234451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14580.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40234451 is about 6343.0632189818. The cubic root of 40234451 is about 342.6620640665.

Adding to 40234451 its reverse (15443204), we get a palindrome (55677655).

The spelling of 40234451 in words is "forty million, two hundred thirty-four thousand, four hundred fifty-one".