42994249 has 9 divisors (see below), whose sum is σ = 44076333. Its totient is φ = 41938572.

The previous prime is 42994247. The next prime is 42994271. The reversal of 42994249 is 94249924.

The square root of 42994249 is 6557.

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

It is not a de Polignac number, because 42994249 - 2¹ = 42994247 is a prime.

It is a Duffinian number.

Its product of digits (186624) is a multiple of the sum of its prime divisors (162).

It is not an unprimeable number, because it can be changed into a prime (42994247) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 517962 + ... + 518044.

Almost surely, 2^42994249 is an apocalyptic number.

42994249 is the 6557-th square number.

42994249 is the 3279-th centered octagonal number.

It is an amenable number.

42994249 is a deficient number, since it is larger than the sum of its proper divisors (1082084).

42994249 is an frugal number, since it uses more digits than its factorization.

42994249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 162 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The cubic root of 42994249 is about 350.3241867049.

Multiplying 42994249 by its product of digits (186624), we get a square (8023758725376 = 2832624²).

The spelling of 42994249 in words is "forty-two million, nine hundred ninety-four thousand, two hundred forty-nine".