1542211073 has 8 divisors (see below), whose sum is σ = 1666842408. Its totient is φ = 1418436864.

The previous prime is 1542211063. The next prime is 1542211091. The reversal of 1542211073 is 3701122451.

It can be written as a sum of positive squares in 4 ways, for example, as 75550864 + 1466660209 = 8692^2 + 38297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1542211073 - 2¹⁶ = 1542145537 is a prime.

It is a super-2 number, since 2×1542211073² = 4756829987367622658, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1542211063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210536 + ... + 217737.

It is an arithmetic number, because the mean of its divisors is an integer number (208355301).

Almost surely, 2^1542211073 is an apocalyptic number.

1542211073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1542211073 is a deficient number, since it is larger than the sum of its proper divisors (124631335).

1542211073 is a wasteful number, since it uses less digits than its factorization.

1542211073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428563.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1542211073 is about 39270.9953146085. The cubic root of 1542211073 is about 1155.3527587004.

The spelling of 1542211073 in words is "one billion, five hundred forty-two million, two hundred eleven thousand, seventy-three".