42946245 has 24 divisors (see below), whose sum is σ = 77009400. Its totient is φ = 22114176.

The previous prime is 42946237. The next prime is 42946247. The reversal of 42946245 is 54264924.

42946245 is a `hidden beast` number, since 4 + 29 + 4 + 624 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11068929 + 31877316 = 3327^2 + 5646^2 .

It is not a de Polignac number, because 42946245 - 2³ = 42946237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42946247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15150 + ... + 17759.

It is an arithmetic number, because the mean of its divisors is an integer number (3208725).

Almost surely, 2^42946245 is an apocalyptic number.

42946245 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42946245 is a deficient number, since it is larger than the sum of its proper divisors (34063155).

42946245 is a wasteful number, since it uses less digits than its factorization.

42946245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32949 (or 32946 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 42946245 is about 6553.3384621886. The cubic root of 42946245 is about 350.1937566639.

The spelling of 42946245 in words is "forty-two million, nine hundred forty-six thousand, two hundred forty-five".