130206042 has 20 divisors (see below), whose sum is σ = 291758346. Its totient is φ = 43401960.

The previous prime is 130206029. The next prime is 130206047. The reversal of 130206042 is 240602031.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 124344801 + 5861241 = 11151^2 + 2421^2 .

It is a super-2 number, since 2×130206042² = 33907226746611528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (130206047) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 401709 + ... + 402032.

Almost surely, 2^130206042 is an apocalyptic number.

130206042 is an abundant number, since it is smaller than the sum of its proper divisors (161552304).

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

130206042 is an equidigital number, since it uses as much as digits as its factorization.

130206042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803755 (or 803746 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 130206042 is about 11410.7862130530. The cubic root of 130206042 is about 506.8471931919.

Adding to 130206042 its reverse (240602031), we get a palindrome (370808073).

The spelling of 130206042 in words is "one hundred thirty million, two hundred six thousand, forty-two".