1555530042 has 32 divisors (see below), whose sum is σ = 3399750144. Its totient is φ = 470558000.

The previous prime is 1555530029. The next prime is 1555530047. The reversal of 1555530042 is 2400355551.

It is a happy number.

1555530042 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1555529991 and 1555530009.

It is not an unprimeable number, because it can be changed into a prime (1555530047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18667 + ... + 58817.

It is an arithmetic number, because the mean of its divisors is an integer number (106242192).

Almost surely, 2^1555530042 is an apocalyptic number.

1555530042 is an abundant number, since it is smaller than the sum of its proper divisors (1844220102).

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

1555530042 is a wasteful number, since it uses less digits than its factorization.

1555530042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40754.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 1555530042 is about 39440.2084426541. The cubic root of 1555530042 is about 1158.6692135609.

Adding to 1555530042 its reverse (2400355551), we get a palindrome (3955885593).

The spelling of 1555530042 in words is "one billion, five hundred fifty-five million, five hundred thirty thousand, forty-two".