1245434254 has 4 divisors (see below), whose sum is σ = 1868151384. Its totient is φ = 622717126.

The previous prime is 1245434251. The next prime is 1245434273. The reversal of 1245434254 is 4524345421.

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

It is a super-2 number, since 2×1245434254² = 3102212962073073032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245434251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311358562 + ... + 311358565.

It is an arithmetic number, because the mean of its divisors is an integer number (467037846).

Almost surely, 2^1245434254 is an apocalyptic number.

1245434254 is a deficient number, since it is larger than the sum of its proper divisors (622717130).

1245434254 is an equidigital number, since it uses as much as digits as its factorization.

1245434254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622717129.

The product of its digits is 76800, while the sum is 34.

The square root of 1245434254 is about 35290.7105907489. The cubic root of 1245434254 is about 1075.9041980413.

Adding to 1245434254 its reverse (4524345421), we get a palindrome (5769779675).

The spelling of 1245434254 in words is "one billion, two hundred forty-five million, four hundred thirty-four thousand, two hundred fifty-four".