10221742 has 4 divisors (see below), whose sum is σ = 15332616. Its totient is φ = 5110870.

The previous prime is 10221737. The next prime is 10221767. The reversal of 10221742 is 24712201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24712201 = 419 ⋅58979.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2555434 + ... + 2555437.

It is an arithmetic number, because the mean of its divisors is an integer number (3833154).

Almost surely, 2^10221742 is an apocalyptic number.

10221742 is a deficient number, since it is larger than the sum of its proper divisors (5110874).

10221742 is an equidigital number, since it uses as much as digits as its factorization.

10221742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110873.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 10221742 is about 3197.1459147183. The cubic root of 10221742 is about 217.0242704702.

Adding to 10221742 its reverse (24712201), we get a palindrome (34933943).

The spelling of 10221742 in words is "ten million, two hundred twenty-one thousand, seven hundred forty-two".