43142906 has 16 divisors (see below), whose sum is σ = 70194600. Its totient is φ = 19806720.

The previous prime is 43142899. The next prime is 43142909. The reversal of 43142906 is 60924134.

It can be written as a sum of positive squares in 4 ways, for example, as 40768225 + 2374681 = 6385^2 + 1541^2 .

It is a super-2 number, since 2×43142906² = 3722620676249672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43142909) 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, 14081 + ... + 16868.

Almost surely, 2^43142906 is an apocalyptic number.

43142906 is a deficient number, since it is larger than the sum of its proper divisors (27051694).

43142906 is a wasteful number, since it uses less digits than its factorization.

43142906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31009.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 43142906 is about 6568.3259663327. The cubic root of 43142906 is about 350.7274827816.

The spelling of 43142906 in words is "forty-three million, one hundred forty-two thousand, nine hundred six".