426250042 has 4 divisors (see below), whose sum is σ = 639375066. Its totient is φ = 213125020.

The previous prime is 426249983. The next prime is 426250049. The reversal of 426250042 is 240052624.

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., 412861761 + 13388281 = 20319^2 + 3659^2 .

It is a junction number, because it is equal to n+sod(n) for n = 426249989 and 426250016.

It is not an unprimeable number, because it can be changed into a prime (426250049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106562509 + ... + 106562512.

Almost surely, 2^426250042 is an apocalyptic number.

426250042 is a deficient number, since it is larger than the sum of its proper divisors (213125024).

426250042 is a wasteful number, since it uses less digits than its factorization.

426250042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213125023.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 426250042 is about 20645.8238392175. The cubic root of 426250042 is about 752.5837065413.

The spelling of 426250042 in words is "four hundred twenty-six million, two hundred fifty thousand, forty-two".