42150434 has 4 divisors (see below), whose sum is σ = 63225654. Its totient is φ = 21075216.

The previous prime is 42150413. The next prime is 42150439. The reversal of 42150434 is 43405124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39250225 + 2900209 = 6265^2 + 1703^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42150439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10537607 + ... + 10537610.

Almost surely, 2^42150434 is an apocalyptic number.

42150434 is a deficient number, since it is larger than the sum of its proper divisors (21075220).

42150434 is a wasteful number, since it uses less digits than its factorization.

42150434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21075219.

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

The square root of 42150434 is about 6492.3365593598. The cubic root of 42150434 is about 348.0171799771.

Adding to 42150434 its reverse (43405124), we get a palindrome (85555558).

The spelling of 42150434 in words is "forty-two million, one hundred fifty thousand, four hundred thirty-four".