42251769 has 24 divisors (see below), whose sum is σ = 71177600. Its totient is φ = 24142104.

The previous prime is 42251767. The next prime is 42251773. The reversal of 42251769 is 96715224.

It is not a de Polignac number, because 42251769 - 2¹ = 42251767 is a prime.

It is a super-2 number, since 2×42251769² = 3570423967258722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42251767) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3757 + ... + 9930.

Almost surely, 2^42251769 is an apocalyptic number.

42251769 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

42251769 is a deficient number, since it is larger than the sum of its proper divisors (28925831).

42251769 is a wasteful number, since it uses less digits than its factorization.

42251769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13714 (or 13697 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 42251769 is about 6500.1360754987. The cubic root of 42251769 is about 348.2958492869.

The spelling of 42251769 in words is "forty-two million, two hundred fifty-one thousand, seven hundred sixty-nine".