142137450 has 288 divisors, whose sum is σ = 490147200. Its totient is φ = 29652480.

The previous prime is 142137427. The next prime is 142137481. The reversal of 142137450 is 54731241.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 1597006 + ... + 1597094.

It is an arithmetic number, because the mean of its divisors is an integer number (1701900).

Almost surely, 2^142137450 is an apocalyptic number.

142137450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142137450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245073600).

142137450 is an abundant number, since it is smaller than the sum of its proper divisors (348009750).

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

142137450 is a wasteful number, since it uses less digits than its factorization.

142137450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 142137450 is about 11922.1411667536. The cubic root of 142137450 is about 521.8786215341.

Adding to 142137450 its reverse (54731241), we get a palindrome (196868691).

The spelling of 142137450 in words is "one hundred forty-two million, one hundred thirty-seven thousand, four hundred fifty".