142015121550 has 36 divisors (see below), whose sum is σ = 381547294440. Its totient is φ = 37870698960.

The previous prime is 142015121537. The next prime is 142015121551. The reversal of 142015121550 is 55121510241.

It is a happy number.

142015121550 is a `hidden beast` number, since 1 + 42 + 0 + 1 + 51 + 21 + 550 = 666.

It is a super-2 number, since 2×142015121550² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142015121551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 157794130 + ... + 157795029.

Almost surely, 2^142015121550 is an apocalyptic number.

142015121550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142015121550 is an abundant number, since it is smaller than the sum of its proper divisors (239532172890).

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

142015121550 is a wasteful number, since it uses less digits than its factorization.

142015121550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315589177 (or 315589169 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Adding to 142015121550 its reverse (55121510241), we get a palindrome (197136631791).

The spelling of 142015121550 in words is "one hundred forty-two billion, fifteen million, one hundred twenty-one thousand, five hundred fifty".