43542536 has 8 divisors (see below), whose sum is σ = 81642270. Its totient is φ = 21771264.

The previous prime is 43542523. The next prime is 43542581. The reversal of 43542536 is 63524534.

It can be written as a sum of positive squares in only one way, i.e., 26977636 + 16564900 = 5194^2 + 4070^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×43542536² = 3791904882622592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2721401 + ... + 2721416.

Almost surely, 2^43542536 is an apocalyptic number.

It is an amenable number.

43542536 is a deficient number, since it is larger than the sum of its proper divisors (38099734).

43542536 is a wasteful number, since it uses less digits than its factorization.

43542536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5442823 (or 5442819 counting only the distinct ones).

The product of its digits is 43200, while the sum is 32.

The square root of 43542536 is about 6598.6768370636. The cubic root of 43542536 is about 351.8070783407.

The spelling of 43542536 in words is "forty-three million, five hundred forty-two thousand, five hundred thirty-six".