1542620671 has 2 divisors, whose sum is σ = 1542620672. Its totient is φ = 1542620670.

The previous prime is 1542620669. The next prime is 1542620683. The reversal of 1542620671 is 1760262451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1542620671 - 2¹ = 1542620669 is a prime.

Together with 1542620669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1542620641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 771310335 + 771310336.

It is an arithmetic number, because the mean of its divisors is an integer number (771310336).

Almost surely, 2^1542620671 is an apocalyptic number.

1542620671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1542620671 is an equidigital number, since it uses as much as digits as its factorization.

1542620671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1542620671 is about 39276.2099877267. The cubic root of 1542620671 is about 1155.4550335659.

The spelling of 1542620671 in words is "one billion, five hundred forty-two million, six hundred twenty thousand, six hundred seventy-one".