1254564542 has 72 divisors (see below), whose sum is σ = 2421674640. Its totient is φ = 485654400.

The previous prime is 1254564541. The next prime is 1254564551. The reversal of 1254564542 is 2454654521.

It is a junction number, because it is equal to n+sod(n) for n = 1254564496 and 1254564505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254564541) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2857559 + ... + 2857997.

It is an arithmetic number, because the mean of its divisors is an integer number (33634370).

Almost surely, 2^1254564542 is an apocalyptic number.

1254564542 is a deficient number, since it is larger than the sum of its proper divisors (1167110098).

1254564542 is a wasteful number, since it uses less digits than its factorization.

1254564542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 700 counting only the distinct ones).

The product of its digits is 192000, while the sum is 38.

The square root of 1254564542 is about 35419.8326083001. The cubic root of 1254564542 is about 1078.5269532545.

The spelling of 1254564542 in words is "one billion, two hundred fifty-four million, five hundred sixty-four thousand, five hundred forty-two".