142531450 has 12 divisors (see below), whose sum is σ = 265108590. Its totient is φ = 57012560.

The previous prime is 142531421. The next prime is 142531471. The reversal of 142531450 is 54135241.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 113230881 + 29300569 = 10641^2 + 5413^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1425265 + ... + 1425364.

Almost surely, 2^142531450 is an apocalyptic number.

142531450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142531450 is a deficient number, since it is larger than the sum of its proper divisors (122577140).

142531450 is a wasteful number, since it uses less digits than its factorization.

142531450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850641 (or 2850636 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 142531450 is about 11938.6536091806. The cubic root of 142531450 is about 522.3603863759.

Adding to 142531450 its reverse (54135241), we get a palindrome (196666691).

The spelling of 142531450 in words is "one hundred forty-two million, five hundred thirty-one thousand, four hundred fifty".