10421534 has 4 divisors (see below), whose sum is σ = 15632304. Its totient is φ = 5210766.

The previous prime is 10421513. The next prime is 10421539. The reversal of 10421534 is 43512401.

10421534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43512401 = 17 ⋅2559553.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2605382 + ... + 2605385.

It is an arithmetic number, because the mean of its divisors is an integer number (3908076).

Almost surely, 2^10421534 is an apocalyptic number.

10421534 is a deficient number, since it is larger than the sum of its proper divisors (5210770).

10421534 is an equidigital number, since it uses as much as digits as its factorization.

10421534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5210769.

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

The square root of 10421534 is about 3228.2400778133. The cubic root of 10421534 is about 218.4291269458.

Adding to 10421534 its reverse (43512401), we get a palindrome (53933935).

The spelling of 10421534 in words is "ten million, four hundred twenty-one thousand, five hundred thirty-four".