142401546 has 36 divisors (see below), whose sum is σ = 358912242. Its totient is φ = 40685904.

The previous prime is 142401491. The next prime is 142401547. The reversal of 142401546 is 645104241.

It can be written as a sum of positive squares in only one way, i.e., 92910321 + 49491225 = 9639^2 + 7035^2 .

It is not an unprimeable number, because it can be changed into a prime (142401547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 79845 + ... + 81608.

Almost surely, 2^142401546 is an apocalyptic number.

142401546 is an abundant number, since it is smaller than the sum of its proper divisors (216510696).

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

142401546 is a wasteful number, since it uses less digits than its factorization.

142401546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161475 (or 161465 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 142401546 is about 11933.2118895124. The cubic root of 142401546 is about 522.2016440326.

Adding to 142401546 its reverse (645104241), we get a palindrome (787505787).

The spelling of 142401546 in words is "one hundred forty-two million, four hundred one thousand, five hundred forty-six".