402654541 has 2 divisors, whose sum is σ = 402654542. Its totient is φ = 402654540.

The previous prime is 402654529. The next prime is 402654587. The reversal of 402654541 is 145456204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317018025 + 85636516 = 17805^2 + 9254^2 .

It is a cyclic number.

It is not a de Polignac number, because 402654541 - 2⁵ = 402654509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402654521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201327270 + 201327271.

It is an arithmetic number, because the mean of its divisors is an integer number (201327271).

Almost surely, 2^402654541 is an apocalyptic number.

It is an amenable number.

402654541 is a deficient number, since it is larger than the sum of its proper divisors (1).

402654541 is an equidigital number, since it uses as much as digits as its factorization.

402654541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 402654541 is about 20066.2537858964. The cubic root of 402654541 is about 738.4326095374.

The spelling of 402654541 in words is "four hundred two million, six hundred fifty-four thousand, five hundred forty-one".