621041042 has 32 divisors (see below), whose sum is σ = 1022160384. Its totient is φ = 281721600.

The previous prime is 621040999. The next prime is 621041051. The reversal of 621041042 is 240140126.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307817 + ... + 309827.

It is an arithmetic number, because the mean of its divisors is an integer number (31942512).

Almost surely, 2^621041042 is an apocalyptic number.

621041042 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

621041042 is a deficient number, since it is larger than the sum of its proper divisors (401119342).

621041042 is a wasteful number, since it uses less digits than its factorization.

621041042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 621041042 is about 24920.6950545124. The cubic root of 621041042 is about 853.1788887087.

Adding to 621041042 its reverse (240140126), we get a palindrome (861181168).

The spelling of 621041042 in words is "six hundred twenty-one million, forty-one thousand, forty-two".