42025429 has 4 divisors (see below), whose sum is σ = 43381120. Its totient is φ = 40669740.

The previous prime is 42025409. The next prime is 42025433. The reversal of 42025429 is 92452024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42025429 - 2¹¹ = 42023381 is a prime.

It is a super-2 number, since 2×42025429² = 3532273365268082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42025397 and 42025406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42025409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677799 + ... + 677860.

It is an arithmetic number, because the mean of its divisors is an integer number (10845280).

Almost surely, 2^42025429 is an apocalyptic number.

It is an amenable number.

42025429 is a deficient number, since it is larger than the sum of its proper divisors (1355691).

42025429 is a wasteful number, since it uses less digits than its factorization.

42025429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355690.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 42025429 is about 6482.7022914831. The cubic root of 42025429 is about 347.6728026224.

The spelling of 42025429 in words is "forty-two million, twenty-five thousand, four hundred twenty-nine".