142227440 has 40 divisors (see below), whose sum is σ = 350133840. Its totient is φ = 53543936.

The previous prime is 142227419. The next prime is 142227467. The reversal of 142227440 is 44722241.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50930 + ... + 53649.

It is an arithmetic number, because the mean of its divisors is an integer number (8753346).

Almost surely, 2^142227440 is an apocalyptic number.

142227440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142227440 is an abundant number, since it is smaller than the sum of its proper divisors (207906400).

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

142227440 is a wasteful number, since it uses less digits than its factorization.

142227440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104609 (or 104603 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 142227440 is about 11925.9146399763. The cubic root of 142227440 is about 521.9887354870.

Adding to 142227440 its reverse (44722241), we get a palindrome (186949681).

The spelling of 142227440 in words is "one hundred forty-two million, two hundred twenty-seven thousand, four hundred forty".