201155031542 has 16 divisors (see below), whose sum is σ = 312258380400. Its totient is φ = 97071599520.

The previous prime is 201155031541. The next prime is 201155031611. The reversal of 201155031542 is 245130551102.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201155031541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522809 + ... + 821972.

It is an arithmetic number, because the mean of its divisors is an integer number (19516148775).

Almost surely, 2^201155031542 is an apocalyptic number.

201155031542 is a deficient number, since it is larger than the sum of its proper divisors (111103348858).

201155031542 is a wasteful number, since it uses less digits than its factorization.

201155031542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347391.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 201155031542 its reverse (245130551102), we get a palindrome (446285582644).

The spelling of 201155031542 in words is "two hundred one billion, one hundred fifty-five million, thirty-one thousand, five hundred forty-two".