42309102 has 48 divisors (see below), whose sum is σ = 94093776. Its totient is φ = 12672000.

The previous prime is 42309101. The next prime is 42309103. The reversal of 42309102 is 20190324.

It is an interprime number because it is at equal distance from previous prime (42309101) and next prime (42309103).

It is a super-2 number, since 2×42309102² = 3580120224092808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42309101) 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, 73038 + ... + 73614.

It is an arithmetic number, because the mean of its divisors is an integer number (1960287).

Almost surely, 2^42309102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42309102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47046888).

42309102 is an abundant number, since it is smaller than the sum of its proper divisors (51784674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42309102 is a wasteful number, since it uses less digits than its factorization.

42309102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 42309102 is about 6504.5447188869. The cubic root of 42309102 is about 348.4533166233.

Adding to 42309102 its reverse (20190324), we get a palindrome (62499426).

The spelling of 42309102 in words is "forty-two million, three hundred nine thousand, one hundred two".