19420130 has 16 divisors (see below), whose sum is σ = 35006904. Its totient is φ = 7756800.

The previous prime is 19420127. The next prime is 19420139. The reversal of 19420130 is 3102491.

It can be written as a sum of positive squares in 4 ways, for example, as 16654561 + 2765569 = 4081^2 + 1663^2 .

It is not an unprimeable number, because it can be changed into a prime (19420139) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11330 + ... + 12930.

Almost surely, 2^19420130 is an apocalyptic number.

19420130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19420130 is a deficient number, since it is larger than the sum of its proper divisors (15586774).

19420130 is a wasteful number, since it uses less digits than its factorization.

19420130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2821.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 19420130 is about 4406.8276571702. The cubic root of 19420130 is about 268.7926429540.

The spelling of 19420130 in words is "nineteen million, four hundred twenty thousand, one hundred thirty".