42246621 has 6 divisors (see below), whose sum is σ = 61022910. Its totient is φ = 28164408.

The previous prime is 42246619. The next prime is 42246623. The reversal of 42246621 is 12664224.

It is an interprime number because it is at equal distance from previous prime (42246619) and next prime (42246623).

It can be written as a sum of positive squares in only one way, i.e., 38266596 + 3980025 = 6186^2 + 1995^2 .

It is not a de Polignac number, because 42246621 - 2¹ = 42246619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42246623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2347026 + ... + 2347043.

It is an arithmetic number, because the mean of its divisors is an integer number (10170485).

Almost surely, 2^42246621 is an apocalyptic number.

It is an amenable number.

42246621 is a deficient number, since it is larger than the sum of its proper divisors (18776289).

42246621 is a wasteful number, since it uses less digits than its factorization.

42246621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694075 (or 4694072 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 42246621 is about 6499.7400717259. The cubic root of 42246621 is about 348.2817031348.

The spelling of 42246621 in words is "forty-two million, two hundred forty-six thousand, six hundred twenty-one".