42473149 has 4 divisors (see below), whose sum is σ = 42489664. Its totient is φ = 42456636.

The previous prime is 42473107. The next prime is 42473159. The reversal of 42473149 is 94137424.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42473149 - 2²¹ = 40375997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42473159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3477 + ... + 9850.

It is an arithmetic number, because the mean of its divisors is an integer number (10622416).

Almost surely, 2^42473149 is an apocalyptic number.

It is an amenable number.

42473149 is a deficient number, since it is larger than the sum of its proper divisors (16515).

42473149 is a wasteful number, since it uses less digits than its factorization.

42473149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16514.

The product of its digits is 24192, while the sum is 34.

The square root of 42473149 is about 6517.1427021357. The cubic root of 42473149 is about 348.9030937587.

It can be divided in two parts, 4247 and 3149, that added together give a square (7396 = 86²).

The spelling of 42473149 in words is "forty-two million, four hundred seventy-three thousand, one hundred forty-nine".