120420342 has 36 divisors (see below), whose sum is σ = 303510636. Its totient is φ = 34405560.

The previous prime is 120420329. The next prime is 120420361. The reversal of 120420342 is 243024021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 67384 + ... + 69147.

It is an arithmetic number, because the mean of its divisors is an integer number (8430851).

Almost surely, 2^120420342 is an apocalyptic number.

120420342 is an abundant number, since it is smaller than the sum of its proper divisors (183090294).

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

120420342 is a wasteful number, since it uses less digits than its factorization.

120420342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136553 (or 136543 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 120420342 is about 10973.6202777388. The cubic root of 120420342 is about 493.8176617844.

Adding to 120420342 its reverse (243024021), we get a palindrome (363444363).

The spelling of 120420342 in words is "one hundred twenty million, four hundred twenty thousand, three hundred forty-two".