1542542943 has 16 divisors (see below), whose sum is σ = 2093333760. Its totient is φ = 1010144256.

The previous prime is 1542542933. The next prime is 1542542971. The reversal of 1542542943 is 3492452451.

It is not a de Polignac number, because 1542542943 - 2¹⁶ = 1542477407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542542933) 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, 61471 + ... + 82847.

It is an arithmetic number, because the mean of its divisors is an integer number (130833360).

Almost surely, 2^1542542943 is an apocalyptic number.

1542542943 is a deficient number, since it is larger than the sum of its proper divisors (550790817).

1542542943 is a wasteful number, since it uses less digits than its factorization.

1542542943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21806.

The product of its digits is 172800, while the sum is 39.

The square root of 1542542943 is about 39275.2204704187. The cubic root of 1542542943 is about 1155.4356266093.

The spelling of 1542542943 in words is "one billion, five hundred forty-two million, five hundred forty-two thousand, nine hundred forty-three".