42471289 has 21 divisors (see below), whose sum is σ = 52294917. Its totient is φ = 34487964.

The previous prime is 42471281. The next prime is 42471307. The reversal of 42471289 is 98217424.

The square root of 42471289 is 6517.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 42471289 - 2³ = 42471281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42471281) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 2235322 + ... + 2235340.

Almost surely, 2^42471289 is an apocalyptic number.

42471289 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

42471289 is the 6517-th square number.

42471289 is the 3259-th centered octagonal number.

It is an amenable number.

42471289 is a deficient number, since it is larger than the sum of its proper divisors (9823628).

42471289 is an frugal number, since it uses more digits than its factorization.

42471289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 26 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The cubic root of 42471289 is about 348.8980005862.

The spelling of 42471289 in words is "forty-two million, four hundred seventy-one thousand, two hundred eighty-nine".