1542211441 has 9 divisors (see below), whose sum is σ = 1558040971. Its totient is φ = 1526542312.

The previous prime is 1542211403. The next prime is 1542211453. The reversal of 1542211441 is 1441122451.

The square root of 1542211441 is 39271.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1402877025 + 139334416 = 37455^2 + 11804^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1542211441 is a prime.

It is a super-2 number, since 2×1542211441² = 4756832257502592962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1542211241) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6793770 + ... + 6793996.

Almost surely, 2^1542211441 is an apocalyptic number.

1542211441 is the 39271-st square number.

1542211441 is the 19636-th centered octagonal number.

It is an amenable number.

1542211441 is a deficient number, since it is larger than the sum of its proper divisors (15829530).

1542211441 is an frugal number, since it uses more digits than its factorization.

1542211441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 400 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The cubic root of 1542211441 is about 1155.3528505966.

Multiplying 1542211441 by its sum of digits (25), we get a square (38555286025 = 196355²).

Adding to 1542211441 its reverse (1441122451), we get a palindrome (2983333892).

The spelling of 1542211441 in words is "one billion, five hundred forty-two million, two hundred eleven thousand, four hundred forty-one".