40221534 has 8 divisors (see below), whose sum is σ = 80443080. Its totient is φ = 13407176.

The previous prime is 40221529. The next prime is 40221557. The reversal of 40221534 is 43512204.

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

40221534 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 40221534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3351789 + ... + 3351800.

It is an arithmetic number, because the mean of its divisors is an integer number (10055385).

Almost surely, 2^40221534 is an apocalyptic number.

40221534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40221534 is a wasteful number, since it uses less digits than its factorization.

40221534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6703594.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40221534 is about 6342.0449383460. The cubic root of 40221534 is about 342.6253903576.

Adding to 40221534 its reverse (43512204), we get a palindrome (83733738).

It can be divided in two parts, 40221 and 534, that added together give a triangular number (40755 = T₂₈₅).

The spelling of 40221534 in words is "forty million, two hundred twenty-one thousand, five hundred thirty-four".