1258962541 has 4 divisors (see below), whose sum is σ = 1259041084. Its totient is φ = 1258884000.

The previous prime is 1258962533. The next prime is 1258962571. The reversal of 1258962541 is 1452698521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1452698521 = 1583 ⋅917687.

It can be written as a sum of positive squares in 2 ways, for example, as 352350441 + 906612100 = 18771^2 + 30110^2 .

It is a 3-Lehmer number, since φ(1258962541) divides (1258962541-1)³.

It is a cyclic number.

It is not a de Polignac number, because 1258962541 - 2³ = 1258962533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258962571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5610 + ... + 50491.

It is an arithmetic number, because the mean of its divisors is an integer number (314760271).

It is a Poulet number, since it divides 2^1258962540-1.

Almost surely, 2^1258962541 is an apocalyptic number.

1258962541 is the 22441-st heptagonal number.

It is an amenable number.

1258962541 is a deficient number, since it is larger than the sum of its proper divisors (78543).

1258962541 is an equidigital number, since it uses as much as digits as its factorization.

1258962541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78542.

The product of its digits is 172800, while the sum is 43.

The square root of 1258962541 is about 35481.8621410996. The cubic root of 1258962541 is about 1079.7857774125.

The spelling of 1258962541 in words is "one billion, two hundred fifty-eight million, nine hundred sixty-two thousand, five hundred forty-one".