626421342 has 16 divisors (see below), whose sum is σ = 1260346752. Its totient is φ = 207556440.

The previous prime is 626421337. The next prime is 626421343. The reversal of 626421342 is 243124626.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (626421343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311584 + ... + 313587.

It is an arithmetic number, because the mean of its divisors is an integer number (78771672).

Almost surely, 2^626421342 is an apocalyptic number.

626421342 is an abundant number, since it is smaller than the sum of its proper divisors (633925410).

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

626421342 is a wasteful number, since it uses less digits than its factorization.

626421342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625343.

The product of its digits is 13824, while the sum is 30.

The square root of 626421342 is about 25028.4106966463. The cubic root of 626421342 is about 855.6356054844.

Adding to 626421342 its reverse (243124626), we get a palindrome (869545968).

The spelling of 626421342 in words is "six hundred twenty-six million, four hundred twenty-one thousand, three hundred forty-two".