40134521 has 16 divisors (see below), whose sum is σ = 47725440. Its totient is φ = 33022080.

The previous prime is 40134511. The next prime is 40134527. The reversal of 40134521 is 12543104.

It is not a de Polignac number, because 40134521 - 2¹⁰ = 40133497 is a prime.

It is a super-2 number, since 2×40134521² = 3221559551798882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40134493 and 40134502.

It is not an unprimeable number, because it can be changed into a prime (40134527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42365 + ... + 43301.

It is an arithmetic number, because the mean of its divisors is an integer number (2982840).

Almost surely, 2^40134521 is an apocalyptic number.

It is an amenable number.

40134521 is a deficient number, since it is larger than the sum of its proper divisors (7590919).

40134521 is a wasteful number, since it uses less digits than its factorization.

40134521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 40134521 is about 6335.1812128778. The cubic root of 40134521 is about 342.3781398221.

Adding to 40134521 its reverse (12543104), we get a palindrome (52677625).

It can be divided in two parts, 40 and 134521, that multiplied together give a triangular number (5380840 = T₃₂₈₀).

The spelling of 40134521 in words is "forty million, one hundred thirty-four thousand, five hundred twenty-one".