40542452 has 6 divisors (see below), whose sum is σ = 70949298. Its totient is φ = 20271224.

The previous prime is 40542431. The next prime is 40542457. The reversal of 40542452 is 25424504.

It can be written as a sum of positive squares in only one way, i.e., 40018276 + 524176 = 6326^2 + 724^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40542457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5067803 + ... + 5067810.

It is an arithmetic number, because the mean of its divisors is an integer number (11824883).

Almost surely, 2^40542452 is an apocalyptic number.

It is an amenable number.

40542452 is a deficient number, since it is larger than the sum of its proper divisors (30406846).

40542452 is a wasteful number, since it uses less digits than its factorization.

40542452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135617 (or 10135615 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 40542452 is about 6367.2955012313. The cubic root of 40542452 is about 343.5342195307.

Adding to 40542452 its reverse (25424504), we get a palindrome (65966956).

The spelling of 40542452 in words is "forty million, five hundred forty-two thousand, four hundred fifty-two".