1254748042 has 4 divisors (see below), whose sum is σ = 1882122066. Its totient is φ = 627374020.

The previous prime is 1254748039. The next prime is 1254748043. The reversal of 1254748042 is 2408474521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2408474521 = 41 ⋅58743281.

It can be written as a sum of positive squares in only one way, i.e., 659924721 + 594823321 = 25689^2 + 24389^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1254747992 and 1254748010.

It is not an unprimeable number, because it can be changed into a prime (1254748043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313687009 + ... + 313687012.

Almost surely, 2^1254748042 is an apocalyptic number.

1254748042 is a deficient number, since it is larger than the sum of its proper divisors (627374024).

1254748042 is an equidigital number, since it uses as much as digits as its factorization.

1254748042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627374023.

The product of its (nonzero) digits is 71680, while the sum is 37.

The square root of 1254748042 is about 35422.4228702668. The cubic root of 1254748042 is about 1078.5795345927.

The spelling of 1254748042 in words is "one billion, two hundred fifty-four million, seven hundred forty-eight thousand, forty-two".