42143450 has 12 divisors (see below), whose sum is σ = 78386910. Its totient is φ = 16857360.

The previous prime is 42143447. The next prime is 42143471. The reversal of 42143450 is 5434124.

It can be written as a sum of positive squares in 3 ways, for example, as 30151081 + 11992369 = 5491^2 + 3463^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 421385 + ... + 421484.

Almost surely, 2^42143450 is an apocalyptic number.

42143450 is a deficient number, since it is larger than the sum of its proper divisors (36243460).

42143450 is a wasteful number, since it uses less digits than its factorization.

42143450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842881 (or 842876 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 42143450 is about 6491.7986721709. The cubic root of 42143450 is about 347.9979576663.

Adding to 42143450 its reverse (5434124), we get a palindrome (47577574).

The spelling of 42143450 in words is "forty-two million, one hundred forty-three thousand, four hundred fifty".