40420552 has 32 divisors (see below), whose sum is σ = 77818680. Its totient is φ = 19676160.

The previous prime is 40420531. The next prime is 40420553. The reversal of 40420552 is 25502404.

It can be written as a sum of positive squares in 4 ways, for example, as 23561316 + 16859236 = 4854^2 + 4106^2 .

It is not an unprimeable number, because it can be changed into a prime (40420553) 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, 54778 + ... + 55510.

Almost surely, 2^40420552 is an apocalyptic number.

It is an amenable number.

40420552 is a deficient number, since it is larger than the sum of its proper divisors (37398128).

40420552 is a wasteful number, since it uses less digits than its factorization.

40420552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 909 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 40420552 is about 6357.7159420660. The cubic root of 40420552 is about 343.1895695796.

Adding to 40420552 its reverse (25502404), we get a palindrome (65922956).

The spelling of 40420552 in words is "forty million, four hundred twenty thousand, five hundred fifty-two".