2454156421 has 2 divisors, whose sum is σ = 2454156422. Its totient is φ = 2454156420.

The previous prime is 2454156379. The next prime is 2454156427. The reversal of 2454156421 is 1246514542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1698676225 + 755480196 = 41215^2 + 27486^2 .

It is a cyclic number.

It is not a de Polignac number, because 2454156421 - 2²⁷ = 2319938693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2454156427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1227078210 + 1227078211.

It is an arithmetic number, because the mean of its divisors is an integer number (1227078211).

Almost surely, 2^2454156421 is an apocalyptic number.

It is an amenable number.

2454156421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2454156421 is an equidigital number, since it uses as much as digits as its factorization.

2454156421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38400, while the sum is 34.

The square root of 2454156421 is about 49539.4430832645. The cubic root of 2454156421 is about 1348.8616688604.

The spelling of 2454156421 in words is "two billion, four hundred fifty-four million, one hundred fifty-six thousand, four hundred twenty-one".