142225540 has 12 divisors (see below), whose sum is σ = 298673676. Its totient is φ = 56890208.

The previous prime is 142225513. The next prime is 142225547. The reversal of 142225540 is 45522241.

It can be written as a sum of positive squares in 2 ways, for example, as 111133764 + 31091776 = 10542^2 + 5576^2 .

It is not an unprimeable number, because it can be changed into a prime (142225547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3555619 + ... + 3555658.

It is an arithmetic number, because the mean of its divisors is an integer number (24889473).

Almost surely, 2^142225540 is an apocalyptic number.

142225540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142225540 is an abundant number, since it is smaller than the sum of its proper divisors (156448136).

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

142225540 is a wasteful number, since it uses less digits than its factorization.

142225540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7111286 (or 7111284 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 142225540 is about 11925.8349812497. The cubic root of 142225540 is about 521.9864110808.

Adding to 142225540 its reverse (45522241), we get a palindrome (187747781).

It can be divided in two parts, 1422 and 25540, that added together give a palindrome (26962).

The spelling of 142225540 in words is "one hundred forty-two million, two hundred twenty-five thousand, five hundred forty".