1421191298 has 54 divisors (see below), whose sum is σ = 2391154857. Its totient is φ = 633370320.

The previous prime is 1421191157. The next prime is 1421191307. The reversal of 1421191298 is 8921911241.

It can be written as a sum of positive squares in 2 ways, for example, as 962674729 + 458516569 = 31027^2 + 21413^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=26657.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 23298188 + ... + 23298248.

Almost surely, 2^1421191298 is an apocalyptic number.

1421191298 is a deficient number, since it is larger than the sum of its proper divisors (969963559).

1421191298 is an equidigital number, since it uses as much as digits as its factorization.

1421191298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 105 counting only the distinct ones).

The product of its digits is 10368, while the sum is 38.

The square root of 1421191298 is about 37698.6909321796. The cubic root of 1421191298 is about 1124.3050978990.

Multiplying 1421191298 by its product of digits (10368), we get a square (14734911377664 = 3838608²).

The spelling of 1421191298 in words is "one billion, four hundred twenty-one million, one hundred ninety-one thousand, two hundred ninety-eight".