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42292429 = 206920441
BaseRepresentation
bin1010000101010…
…1010011001101
32221120200022021
42201111103031
541311324204
64110250141
71022323354
oct241252315
987520267
1042292429
1121966a23
12121b6951
1389ba10a
14588c99b
153aa6154
hex28554cd

42292429 has 4 divisors (see below), whose sum is σ = 42314940. Its totient is φ = 42269920.

The previous prime is 42292427. The next prime is 42292441. The reversal of 42292429 is 92429224.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21114025 + 21178404 = 4595^2 + 4602^2 .

It is a cyclic number.

It is not a de Polignac number, because 42292429 - 21 = 42292427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42292394 and 42292403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42292421) 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, 8152 + ... + 12289.

It is an arithmetic number, because the mean of its divisors is an integer number (10578735).

It is a self-describing number.

Almost surely, 242292429 is an apocalyptic number.

It is an amenable number.

42292429 is a deficient number, since it is larger than the sum of its proper divisors (22511).

42292429 is a wasteful number, since it uses less digits than its factorization.

42292429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22510.

The product of its digits is 20736, while the sum is 34.

The square root of 42292429 is about 6503.2629502427. The cubic root of 42292429 is about 348.4075382510.

The spelling of 42292429 in words is "forty-two million, two hundred ninety-two thousand, four hundred twenty-nine".

Divisors: 1 2069 20441 42292429