130421554 has 4 divisors (see below), whose sum is σ = 195632334. Its totient is φ = 65210776.

The previous prime is 130421531. The next prime is 130421573. The reversal of 130421554 is 455124031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 455124031 = 439 ⋅1036729.

It can be written as a sum of positive squares in only one way, i.e., 84548025 + 45873529 = 9195^2 + 6773^2 .

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, 32605387 + ... + 32605390.

Almost surely, 2^130421554 is an apocalyptic number.

130421554 is a deficient number, since it is larger than the sum of its proper divisors (65210780).

130421554 is an equidigital number, since it uses as much as digits as its factorization.

130421554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65210779.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 130421554 is about 11420.2256545131. The cubic root of 130421554 is about 507.1266770024.

Adding to 130421554 its reverse (455124031), we get a palindrome (585545585).

The spelling of 130421554 in words is "one hundred thirty million, four hundred twenty-one thousand, five hundred fifty-four".