40261305 has 64 divisors (see below), whose sum is σ = 76769280. Its totient is φ = 17639424.

The previous prime is 40261301. The next prime is 40261307. The reversal of 40261305 is 50316204.

It is a happy number.

It is not a de Polignac number, because 40261305 - 2² = 40261301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (40261301) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 415017 + ... + 415113.

It is an arithmetic number, because the mean of its divisors is an integer number (1199520).

Almost surely, 2^40261305 is an apocalyptic number.

It is an amenable number.

40261305 is a deficient number, since it is larger than the sum of its proper divisors (36507975).

40261305 is a wasteful number, since it uses less digits than its factorization.

40261305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 40261305 is about 6345.1796664870. The cubic root of 40261305 is about 342.7382823353.

Adding to 40261305 its reverse (50316204), we get a palindrome (90577509).

The spelling of 40261305 in words is "forty million, two hundred sixty-one thousand, three hundred five".