1542644061 has 16 divisors (see below), whose sum is σ = 2354383488. Its totient is φ = 880128000.

The previous prime is 1542644057. The next prime is 1542644069. The reversal of 1542644061 is 1604462451.

It is not a de Polignac number, because 1542644061 - 2² = 1542644057 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542644069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43840 + ... + 70761.

It is an arithmetic number, because the mean of its divisors is an integer number (147148968).

Almost surely, 2^1542644061 is an apocalyptic number.

It is an amenable number.

1542644061 is a deficient number, since it is larger than the sum of its proper divisors (811739427).

1542644061 is a wasteful number, since it uses less digits than its factorization.

1542644061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115252.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 1542644061 is about 39276.5077495441. The cubic root of 1542644061 is about 1155.4608734022.

The spelling of 1542644061 in words is "one billion, five hundred forty-two million, six hundred forty-four thousand, sixty-one".