42450249 has 16 divisors (see below), whose sum is σ = 59472000. Its totient is φ = 26881536.

The previous prime is 42450227. The next prime is 42450269. The reversal of 42450249 is 94205424.

It is not a de Polignac number, because 42450249 - 2¹² = 42446153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42450209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8217 + ... + 12345.

It is an arithmetic number, because the mean of its divisors is an integer number (3717000).

Almost surely, 2^42450249 is an apocalyptic number.

It is an amenable number.

42450249 is a deficient number, since it is larger than the sum of its proper divisors (17021751).

42450249 is a wasteful number, since it uses less digits than its factorization.

42450249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4304.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 42450249 is about 6515.3855603487. The cubic root of 42450249 is about 348.8403771372.

The spelling of 42450249 in words is "forty-two million, four hundred fifty thousand, two hundred forty-nine".