42948621 has 6 divisors (see below), whose sum is σ = 62036910. Its totient is φ = 28632408.

The previous prime is 42948617. The next prime is 42948629. The reversal of 42948621 is 12684924.

42948621 is a `hidden beast` number, since 4 + 29 + 4 + 8 + 621 = 666.

It can be written as a sum of positive squares in only one way, i.e., 33767721 + 9180900 = 5811^2 + 3030^2 .

It is not a de Polignac number, because 42948621 - 2² = 42948617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42948629) 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, 2386026 + ... + 2386043.

It is an arithmetic number, because the mean of its divisors is an integer number (10339485).

Almost surely, 2^42948621 is an apocalyptic number.

It is an amenable number.

42948621 is a deficient number, since it is larger than the sum of its proper divisors (19088289).

42948621 is a wasteful number, since it uses less digits than its factorization.

42948621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4772075 (or 4772072 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 42948621 is about 6553.5197413298. The cubic root of 42948621 is about 350.2002146986.

The spelling of 42948621 in words is "forty-two million, nine hundred forty-eight thousand, six hundred twenty-one".