1542021201 has 12 divisors (see below), whose sum is σ = 2545558912. Its totient is φ = 881154936.

The previous prime is 1542021181. The next prime is 1542021233. The reversal of 1542021201 is 1021202451.

1542021201 is a `hidden beast` number, since 1 + 542 + 0 + 2 + 120 + 1 = 666.

It is not a de Polignac number, because 1542021201 - 2¹³ = 1542013009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1542021241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12238201 + ... + 12238326.

Almost surely, 2^1542021201 is an apocalyptic number.

It is an amenable number.

1542021201 is a deficient number, since it is larger than the sum of its proper divisors (1003537711).

1542021201 is a wasteful number, since it uses less digits than its factorization.

1542021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24476540 (or 24476537 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1542021201 is about 39268.5777817328. The cubic root of 1542021201 is about 1155.3053423326.

Adding to 1542021201 its reverse (1021202451), we get a palindrome (2563223652).

It can be divided in two parts, 154202 and 1201, that added together give a triangular number (155403 = T₅₅₇).

The spelling of 1542021201 in words is "one billion, five hundred forty-two million, twenty-one thousand, two hundred one".