142120455 has 8 divisors (see below), whose sum is σ = 227392752. Its totient is φ = 75797568.

The previous prime is 142120421. The next prime is 142120457. The reversal of 142120455 is 554021241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142120455 - 2¹⁶ = 142054919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142120457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4737334 + ... + 4737363.

It is an arithmetic number, because the mean of its divisors is an integer number (28424094).

Almost surely, 2^142120455 is an apocalyptic number.

142120455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142120455 is a deficient number, since it is larger than the sum of its proper divisors (85272297).

142120455 is an equidigital number, since it uses as much as digits as its factorization.

142120455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9474705.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 142120455 is about 11921.4283959599. The cubic root of 142120455 is about 521.8578208217.

Adding to 142120455 its reverse (554021241), we get a palindrome (696141696).

The spelling of 142120455 in words is "one hundred forty-two million, one hundred twenty thousand, four hundred fifty-five".