402620543 has 32 divisors (see below), whose sum is σ = 476582400. Its totient is φ = 336986496.

The previous prime is 402620531. The next prime is 402620549. The reversal of 402620543 is 345026204.

It is not a de Polignac number, because 402620543 - 2¹² = 402616447 is a prime.

It is a super-2 number, since 2×402620543² = 324206603291229698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402620549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 511196 + ... + 511982.

It is an arithmetic number, because the mean of its divisors is an integer number (14893200).

Almost surely, 2^402620543 is an apocalyptic number.

402620543 is a deficient number, since it is larger than the sum of its proper divisors (73961857).

402620543 is a wasteful number, since it uses less digits than its factorization.

402620543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 402620543 is about 20065.4066243373. The cubic root of 402620543 is about 738.4118258499.

Adding to 402620543 its reverse (345026204), we get a palindrome (747646747).

The spelling of 402620543 in words is "four hundred two million, six hundred twenty thousand, five hundred forty-three".