1245120454 has 4 divisors (see below), whose sum is σ = 1867680684. Its totient is φ = 622560226.

The previous prime is 1245120379. The next prime is 1245120473. The reversal of 1245120454 is 4540215421.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1245120454² = 3100649889938332232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311280112 + ... + 311280115.

It is an arithmetic number, because the mean of its divisors is an integer number (466920171).

Almost surely, 2^1245120454 is an apocalyptic number.

1245120454 is a deficient number, since it is larger than the sum of its proper divisors (622560230).

1245120454 is an equidigital number, since it uses as much as digits as its factorization.

1245120454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622560229.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 1245120454 is about 35286.2643814842. The cubic root of 1245120454 is about 1075.8138287328.

Adding to 1245120454 its reverse (4540215421), we get a palindrome (5785335875).

The spelling of 1245120454 in words is "one billion, two hundred forty-five million, one hundred twenty thousand, four hundred fifty-four".