1542742451 has 2 divisors, whose sum is σ = 1542742452. Its totient is φ = 1542742450.

The previous prime is 1542742441. The next prime is 1542742471. The reversal of 1542742451 is 1542472451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1542742451 - 2³⁰ = 469000627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1542742441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771371225 + 771371226.

It is an arithmetic number, because the mean of its divisors is an integer number (771371226).

Almost surely, 2^1542742451 is an apocalyptic number.

1542742451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542742451 is an equidigital number, since it uses as much as digits as its factorization.

1542742451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44800, while the sum is 35.

The square root of 1542742451 is about 39277.7602594649. The cubic root of 1542742451 is about 1155.4854380186.

The spelling of 1542742451 in words is "one billion, five hundred forty-two million, seven hundred forty-two thousand, four hundred fifty-one".