1457777542 has 32 divisors (see below), whose sum is σ = 2443440384. Its totient is φ = 647740800.

The previous prime is 1457777507. The next prime is 1457777549. The reversal of 1457777542 is 2457777541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1457777549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154192 + ... + 163372.

It is an arithmetic number, because the mean of its divisors is an integer number (76357512).

Almost surely, 2^1457777542 is an apocalyptic number.

1457777542 is a deficient number, since it is larger than the sum of its proper divisors (985662842).

1457777542 is a wasteful number, since it uses less digits than its factorization.

1457777542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9424.

The product of its digits is 1920800, while the sum is 49.

The square root of 1457777542 is about 38180.8530810929. The cubic root of 1457777542 is about 1133.8712712896.

Subtracting 1457777542 from its reverse (2457777541), we obtain a palindrome (999999999).

The spelling of 1457777542 in words is "one billion, four hundred fifty-seven million, seven hundred seventy-seven thousand, five hundred forty-two".