1542134623 has 2 divisors, whose sum is σ = 1542134624. Its totient is φ = 1542134622.

The previous prime is 1542134597. The next prime is 1542134647. The reversal of 1542134623 is 3264312451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1542134623 - 2⁵ = 1542134591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1542134683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771067311 + 771067312.

It is an arithmetic number, because the mean of its divisors is an integer number (771067312).

Almost surely, 2^1542134623 is an apocalyptic number.

1542134623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542134623 is an equidigital number, since it uses as much as digits as its factorization.

1542134623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 31.

The square root of 1542134623 is about 39270.0219378599. The cubic root of 1542134623 is about 1155.3336674577. Note that the first 3 decimals are identical.

The spelling of 1542134623 in words is "one billion, five hundred forty-two million, one hundred thirty-four thousand, six hundred twenty-three".