1421900554 has 4 divisors (see below), whose sum is σ = 2132850834. Its totient is φ = 710950276.

The previous prime is 1421900527. The next prime is 1421900569. The reversal of 1421900554 is 4550091241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4550091241 = 73 ⋅62330017.

It can be written as a sum of positive squares in only one way, i.e., 1291324225 + 130576329 = 35935^2 + 11427^2 .

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 as a sum of consecutive naturals, namely, 355475137 + ... + 355475140.

Almost surely, 2^1421900554 is an apocalyptic number.

1421900554 is a deficient number, since it is larger than the sum of its proper divisors (710950280).

1421900554 is an equidigital number, since it uses as much as digits as its factorization.

1421900554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710950279.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1421900554 is about 37708.0966637140. The cubic root of 1421900554 is about 1124.4920977119.

Adding to 1421900554 its reverse (4550091241), we get a palindrome (5971991795).

The spelling of 1421900554 in words is "one billion, four hundred twenty-one million, nine hundred thousand, five hundred fifty-four".