40470145 has 8 divisors (see below), whose sum is σ = 49360680. Its totient is φ = 31845120.

The previous prime is 40470137. The next prime is 40470151. The reversal of 40470145 is 54107404.

It can be written as a sum of positive squares in 4 ways, for example, as 3125824 + 37344321 = 1768^2 + 6111^2 .

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

It is not a de Polignac number, because 40470145 - 2³ = 40470137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66040 + ... + 66649.

It is an arithmetic number, because the mean of its divisors is an integer number (6170085).

Almost surely, 2^40470145 is an apocalyptic number.

It is an amenable number.

40470145 is a deficient number, since it is larger than the sum of its proper divisors (8890535).

40470145 is a wasteful number, since it uses less digits than its factorization.

40470145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132755.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 40470145 is about 6361.6149679150. The cubic root of 40470145 is about 343.3298682111.

Adding to 40470145 its reverse (54107404), we get a palindrome (94577549).

The spelling of 40470145 in words is "forty million, four hundred seventy thousand, one hundred forty-five".